Bug 1349689 - Remove old preferences fork r=jaws
☠☠ backed out by 67b9e1d526da ☠ ☠
authorRicky Chien <ricky060709@gmail.com>
Mon, 21 Aug 2017 17:48:18 +0800
changeset 429960 df8215261c7e3c13e815db0098062bccdbe3a9a4
parent 429921 6d66d3b4226c6945066a4b93541d74d1c386878b
child 429961 2f514d66bb019f15d83a51c968ec82fbf42e4443
push id1567
push userjlorenzo@mozilla.com
push dateThu, 02 Nov 2017 12:36:05 +0000
treeherdermozilla-release@e512c14a0406 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersjaws
bugs1349689
milestone57.0a1
first release with
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Bug 1349689 - Remove old preferences fork r=jaws MozReview-Commit-ID: GNPcQGUTUKJ
browser/app/profile/firefox.js
browser/base/content/browser-data-submission-info-bar.js
browser/base/content/browser-media.js
browser/base/content/browser.js
browser/base/content/test/alerts/browser_notification_open_settings.js
browser/base/content/test/general/browser_datachoices_notification.js
browser/base/content/test/general/browser_offlineQuotaNotification.js
browser/base/content/test/general/browser_storagePressure_notification.js
browser/base/content/test/urlbar/browser_urlbarAboutHomeLoading.js
browser/base/content/utilityOverlay.js
browser/components/about/AboutRedirector.cpp
browser/components/about/AboutRedirector.h
browser/components/customizableui/test/browser_1087303_button_preferences.js
browser/components/customizableui/test/browser_synced_tabs_menu.js
browser/components/feeds/FeedWriter.js
browser/components/nsBrowserGlue.js
browser/components/preferences/applicationManager.js
browser/components/preferences/handlers.xml
browser/components/preferences/in-content-new/containers.js
browser/components/preferences/in-content-new/containers.xul
browser/components/preferences/in-content-new/findInPage.js
browser/components/preferences/in-content-new/jar.mn
browser/components/preferences/in-content-new/main.js
browser/components/preferences/in-content-new/main.xul
browser/components/preferences/in-content-new/moz.build
browser/components/preferences/in-content-new/preferences.js
browser/components/preferences/in-content-new/preferences.xul
browser/components/preferences/in-content-new/privacy.js
browser/components/preferences/in-content-new/privacy.xul
browser/components/preferences/in-content-new/search.js
browser/components/preferences/in-content-new/search.xul
browser/components/preferences/in-content-new/searchResults.xul
browser/components/preferences/in-content-new/subdialogs.js
browser/components/preferences/in-content-new/sync.js
browser/components/preferences/in-content-new/sync.xul
browser/components/preferences/in-content-new/tests/.eslintrc.js
browser/components/preferences/in-content-new/tests/browser.ini
browser/components/preferences/in-content-new/tests/browser_advanced_update.js
browser/components/preferences/in-content-new/tests/browser_applications_selection.js
browser/components/preferences/in-content-new/tests/browser_basic_rebuild_fonts_test.js
browser/components/preferences/in-content-new/tests/browser_bug1018066_resetScrollPosition.js
browser/components/preferences/in-content-new/tests/browser_bug1020245_openPreferences_to_paneContent.js
browser/components/preferences/in-content-new/tests/browser_bug1184989_prevent_scrolling_when_preferences_flipped.js
browser/components/preferences/in-content-new/tests/browser_bug1184989_prevent_scrolling_when_preferences_flipped.xul
browser/components/preferences/in-content-new/tests/browser_bug410900.js
browser/components/preferences/in-content-new/tests/browser_bug705422.js
browser/components/preferences/in-content-new/tests/browser_bug731866.js
browser/components/preferences/in-content-new/tests/browser_bug795764_cachedisabled.js
browser/components/preferences/in-content-new/tests/browser_change_app_handler.js
browser/components/preferences/in-content-new/tests/browser_checkspelling.js
browser/components/preferences/in-content-new/tests/browser_connection.js
browser/components/preferences/in-content-new/tests/browser_connection_bug388287.js
browser/components/preferences/in-content-new/tests/browser_cookies_dialog.js
browser/components/preferences/in-content-new/tests/browser_cookies_exceptions.js
browser/components/preferences/in-content-new/tests/browser_defaultbrowser_alwayscheck.js
browser/components/preferences/in-content-new/tests/browser_engines.js
browser/components/preferences/in-content-new/tests/browser_healthreport.js
browser/components/preferences/in-content-new/tests/browser_homepages_filter_aboutpreferences.js
browser/components/preferences/in-content-new/tests/browser_layersacceleration.js
browser/components/preferences/in-content-new/tests/browser_masterpassword.js
browser/components/preferences/in-content-new/tests/browser_notifications_do_not_disturb.js
browser/components/preferences/in-content-new/tests/browser_password_management.js
browser/components/preferences/in-content-new/tests/browser_performance.js
browser/components/preferences/in-content-new/tests/browser_performance_e10srollout.js
browser/components/preferences/in-content-new/tests/browser_performance_non_e10s.js
browser/components/preferences/in-content-new/tests/browser_permissions_dialog.js
browser/components/preferences/in-content-new/tests/browser_permissions_urlFieldHidden.js
browser/components/preferences/in-content-new/tests/browser_privacypane_1.js
browser/components/preferences/in-content-new/tests/browser_privacypane_3.js
browser/components/preferences/in-content-new/tests/browser_privacypane_4.js
browser/components/preferences/in-content-new/tests/browser_privacypane_5.js
browser/components/preferences/in-content-new/tests/browser_privacypane_8.js
browser/components/preferences/in-content-new/tests/browser_proxy_backup.js
browser/components/preferences/in-content-new/tests/browser_sanitizeOnShutdown_prefLocked.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_1.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_2.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_3.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_4.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_5.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_6.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_7.js
browser/components/preferences/in-content-new/tests/browser_search_subdialogs_within_preferences_8.js
browser/components/preferences/in-content-new/tests/browser_search_within_preferences_1.js
browser/components/preferences/in-content-new/tests/browser_search_within_preferences_2.js
browser/components/preferences/in-content-new/tests/browser_search_within_preferences_command.js
browser/components/preferences/in-content-new/tests/browser_searchsuggestions.js
browser/components/preferences/in-content-new/tests/browser_security-1.js
browser/components/preferences/in-content-new/tests/browser_security-2.js
browser/components/preferences/in-content-new/tests/browser_siteData.js
browser/components/preferences/in-content-new/tests/browser_siteData2.js
browser/components/preferences/in-content-new/tests/browser_siteData3.js
browser/components/preferences/in-content-new/tests/browser_site_login_exceptions.js
browser/components/preferences/in-content-new/tests/browser_subdialogs.js
browser/components/preferences/in-content-new/tests/browser_telemetry.js
browser/components/preferences/in-content-new/tests/head.js
browser/components/preferences/in-content-new/tests/offline/manifest.appcache
browser/components/preferences/in-content-new/tests/offline/offline.html
browser/components/preferences/in-content-new/tests/privacypane_tests_perwindow.js
browser/components/preferences/in-content-new/tests/site_data_test.html
browser/components/preferences/in-content-new/tests/subdialog.xul
browser/components/preferences/in-content-new/tests/subdialog2.xul
browser/components/preferences/in-content/advanced.js
browser/components/preferences/in-content/advanced.xul
browser/components/preferences/in-content/applications.js
browser/components/preferences/in-content/applications.xul
browser/components/preferences/in-content/containers.js
browser/components/preferences/in-content/containers.xul
browser/components/preferences/in-content/content.js
browser/components/preferences/in-content/content.xul
browser/components/preferences/in-content/findInPage.js
browser/components/preferences/in-content/jar.mn
browser/components/preferences/in-content/main.js
browser/components/preferences/in-content/main.xul
browser/components/preferences/in-content/preferences.js
browser/components/preferences/in-content/preferences.xul
browser/components/preferences/in-content/privacy.js
browser/components/preferences/in-content/privacy.xul
browser/components/preferences/in-content/search.xul
browser/components/preferences/in-content/searchResults.xul
browser/components/preferences/in-content/security.js
browser/components/preferences/in-content/security.xul
browser/components/preferences/in-content/subdialogs.js
browser/components/preferences/in-content/sync.js
browser/components/preferences/in-content/sync.xul
browser/components/preferences/in-content/tests/browser.ini
browser/components/preferences/in-content/tests/browser_advanced_update.js
browser/components/preferences/in-content/tests/browser_applications_selection.js
browser/components/preferences/in-content/tests/browser_basic_rebuild_fonts_test.js
browser/components/preferences/in-content/tests/browser_bug1018066_resetScrollPosition.js
browser/components/preferences/in-content/tests/browser_bug1020245_openPreferences_to_paneContent.js
browser/components/preferences/in-content/tests/browser_bug410900.js
browser/components/preferences/in-content/tests/browser_bug731866.js
browser/components/preferences/in-content/tests/browser_bug795764_cachedisabled.js
browser/components/preferences/in-content/tests/browser_change_app_handler.js
browser/components/preferences/in-content/tests/browser_checkspelling.js
browser/components/preferences/in-content/tests/browser_cookies_dialog.js
browser/components/preferences/in-content/tests/browser_cookies_exceptions.js
browser/components/preferences/in-content/tests/browser_engines.js
browser/components/preferences/in-content/tests/browser_homepages_filter_aboutpreferences.js
browser/components/preferences/in-content/tests/browser_layersacceleration.js
browser/components/preferences/in-content/tests/browser_masterpassword.js
browser/components/preferences/in-content/tests/browser_notifications_do_not_disturb.js
browser/components/preferences/in-content/tests/browser_password_management.js
browser/components/preferences/in-content/tests/browser_performance.js
browser/components/preferences/in-content/tests/browser_performance_e10srollout.js
browser/components/preferences/in-content/tests/browser_performance_non_e10s.js
browser/components/preferences/in-content/tests/browser_permissions_dialog.js
browser/components/preferences/in-content/tests/browser_permissions_urlFieldHidden.js
browser/components/preferences/in-content/tests/browser_sanitizeOnShutdown_prefLocked.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_1.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_2.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_3.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_4.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_5.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_6.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_7.js
browser/components/preferences/in-content/tests/browser_search_subdialogs_within_preferences_8.js
browser/components/preferences/in-content/tests/browser_search_within_preferences_1.js
browser/components/preferences/in-content/tests/browser_search_within_preferences_2.js
browser/components/preferences/in-content/tests/browser_search_within_preferences_command.js
browser/components/preferences/in-content/tests/browser_searchsuggestions.js
browser/components/preferences/in-content/tests/browser_security-1.js
browser/components/preferences/in-content/tests/browser_security-2.js
browser/components/preferences/in-content/tests/browser_security.js
browser/components/preferences/in-content/tests/browser_siteData.js
browser/components/preferences/in-content/tests/browser_siteData2.js
browser/components/preferences/in-content/tests/browser_siteData3.js
browser/components/preferences/in-content/tests/browser_site_login_exceptions.js
browser/components/preferences/in-content/tests/head.js
browser/components/preferences/in-content/tests/offline/offline.html
browser/components/preferences/moz.build
browser/components/preferences/siteDataRemoveSelected.xul
browser/components/preferences/siteDataSettings.xul
browser/components/translation/test/browser_translation_yandex.js
browser/components/uitour/UITour-lib.js
browser/components/uitour/UITour.jsm
browser/components/uitour/test/browser_openPreferences.js
browser/extensions/formautofill/FormAutofillParent.jsm
browser/extensions/formautofill/FormAutofillPreferences.jsm
browser/extensions/formautofill/test/browser/browser_privacyPreferences.js
browser/extensions/shield-recipe-client/content/AboutPages.jsm
browser/extensions/shield-recipe-client/content/shield-content-frame.js
browser/extensions/shield-recipe-client/lib/ShieldPreferences.jsm
browser/extensions/shield-recipe-client/test/browser/browser_about_studies.js
browser/installer/allowed-dupes.mn
browser/locales/en-US/chrome/browser/aboutDialog.dtd
browser/locales/en-US/chrome/browser/preferences-old/advanced.dtd
browser/locales/en-US/chrome/browser/preferences-old/applications.dtd
browser/locales/en-US/chrome/browser/preferences-old/containers.dtd
browser/locales/en-US/chrome/browser/preferences-old/containers.properties
browser/locales/en-US/chrome/browser/preferences-old/content.dtd
browser/locales/en-US/chrome/browser/preferences-old/main.dtd
browser/locales/en-US/chrome/browser/preferences-old/preferences.dtd
browser/locales/en-US/chrome/browser/preferences-old/preferences.properties
browser/locales/en-US/chrome/browser/preferences-old/privacy.dtd
browser/locales/en-US/chrome/browser/preferences-old/search.dtd
browser/locales/en-US/chrome/browser/preferences-old/security.dtd
browser/locales/en-US/chrome/browser/preferences-old/sync.dtd
browser/locales/en-US/chrome/browser/preferences-old/tabs.dtd
browser/locales/jar.mn
browser/themes/linux/jar.mn
browser/themes/linux/preferences/in-content-new/dialog.css
browser/themes/linux/preferences/in-content-new/preferences.css
browser/themes/linux/preferences/in-content/dialog.css
browser/themes/linux/preferences/in-content/preferences.css
browser/themes/osx/jar.mn
browser/themes/osx/preferences/in-content-new/dialog.css
browser/themes/osx/preferences/in-content-new/preferences.css
browser/themes/osx/preferences/in-content/dialog.css
browser/themes/osx/preferences/in-content/preferences.css
browser/themes/shared/fxa/android.png
browser/themes/shared/fxa/android@2x.png
browser/themes/shared/fxa/ios.png
browser/themes/shared/fxa/ios@2x.png
browser/themes/shared/fxa/logo.png
browser/themes/shared/fxa/logo@2x.png
browser/themes/shared/incontentprefs-old/containers.css
browser/themes/shared/incontentprefs-old/dialog.inc.css
browser/themes/shared/incontentprefs-old/icons.svg
browser/themes/shared/incontentprefs-old/preferences.inc.css
browser/themes/shared/incontentprefs-old/search.css
browser/themes/shared/incontentprefs/containers.css
browser/themes/shared/incontentprefs/preferences.inc.css
browser/themes/shared/jar.inc.mn
browser/themes/windows/jar.mn
browser/themes/windows/preferences/in-content-new/dialog.css
browser/themes/windows/preferences/in-content/dialog.css
browser/themes/windows/preferences/in-content/preferences.css
browser/tools/mozscreenshots/mozscreenshots/extension/configurations/Preferences.jsm
npm-shrinkwrap.json
testing/runtimes/mochitest-browser-chrome-e10s.runtimes.json
testing/runtimes/mochitest-browser-chrome.runtimes.json
toolkit/content/aboutTelemetry.js
toolkit/mozapps/extensions/content/extensions.js
toolkit/mozapps/extensions/test/browser/browser_experiments.js
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -720,19 +720,16 @@ pref("plugins.favorfallback.rules", "nos
 pref("browser.preferences.instantApply", false);
 #else
 pref("browser.preferences.instantApply", true);
 #endif
 
 // Toggling Search bar on and off in about:preferences
 pref("browser.preferences.search", true);
 
-// Use the new in-content about:preferences in Nightly only for now
-pref("browser.preferences.useOldOrganization", false);
-
 // Once the Storage Management is completed.
 // (The Storage Management-related prefs are browser.storageManager.* )
 // The Offline(Appcache) Group section in about:preferences will be hidden.
 // And the task to clear appcache will be done by Storage Management.
 #if defined(NIGHTLY_BUILD)
 pref("browser.preferences.offlineGroup.enabled", false);
 #else
 pref("browser.preferences.offlineGroup.enabled", true);
--- a/browser/base/content/browser-data-submission-info-bar.js
+++ b/browser/base/content/browser-data-submission-info-bar.js
@@ -58,23 +58,17 @@ var gDataNotificationInfoBar = {
     this._actionTaken = false;
 
     let buttons = [{
       label: gNavigatorBundle.getString("dataReportingNotification.button.label"),
       accessKey: gNavigatorBundle.getString("dataReportingNotification.button.accessKey"),
       popup: null,
       callback: () => {
         this._actionTaken = true;
-        // The advanced subpanes are only supported in the old organization, which will
-        // be removed by bug 1349689.
-        if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-          window.openAdvancedPreferences("dataChoicesTab", {origin: "dataReporting"});
-        } else {
-          window.openPreferences("privacy-reports", {origin: "dataReporting"});
-        }
+        window.openPreferences("privacy-reports", {origin: "dataReporting"});
       },
     }];
 
     this._log.info("Creating data reporting policy notification.");
     this._notificationBox.appendNotification(
       message,
       this._DATA_REPORTING_NOTIFICATION,
       null,
--- a/browser/base/content/browser-media.js
+++ b/browser/base/content/browser-media.js
@@ -164,21 +164,17 @@ var gEMEHandler = {
     } else {
       document.getElementById(anchorId).removeAttribute("firstplay");
     }
 
     let mainAction = {
       label: gNavigatorBundle.getString(btnLabelId),
       accessKey: gNavigatorBundle.getString(btnAccessKeyId),
       callback() {
-        if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-          openPreferences("paneContent", {origin: "browserMedia"});
-        } else {
-          openPreferences("general-drm", {origin: "browserMedia"});
-        }
+        openPreferences("general-drm", {origin: "browserMedia"});
       },
       dismiss: true
     };
     let options = {
       dismissed: true,
       eventCallback: aTopic => aTopic == "swapping",
       learnMoreURL: Services.urlFormatter.formatURLPref("app.support.baseURL") + "drm-content",
     };
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -543,21 +543,17 @@ const gStoragePressureObserver = {
       msg = prefStrBundle.getFormattedString(descriptionStringID, [brandShortName]);
       buttons.push({
         label: prefStrBundle.getString(prefButtonLabelStringID),
         accessKey: prefStrBundle.getString(prefButtonAccesskeyStringID),
         callback(notificationBar, button) {
           // The advanced subpanes are only supported in the old organization, which will
           // be removed by bug 1349689.
           let win = gBrowser.ownerGlobal;
-          if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-            win.openAdvancedPreferences("networkTab", {origin: "storagePressure"});
-          } else {
-            win.openPreferences("panePrivacy", {origin: "storagePressure"});
-          }
+          win.openPreferences("panePrivacy", { origin: "storagePressure" });
         }
       });
     }
 
     notificationBox.appendNotification(
       msg, NOTIFICATION_VALUE, null, notificationBox.PRIORITY_WARNING_HIGH, buttons, null);
   }
 };
@@ -6527,23 +6523,17 @@ var OfflineApps = {
     if (browser && browser.messageManager) {
       browser.messageManager.sendAsyncMessage("OfflineApps:StartFetching", {
         docId,
       });
     }
   },
 
   manage() {
-    // The advanced subpanes are only supported in the old organization, which will
-    // be removed by bug 1349689.
-    if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-      openAdvancedPreferences("networkTab", {origin: "offlineApps"});
-    } else {
-      openPreferences("panePrivacy", {origin: "offlineApps"});
-    }
+    openPreferences("panePrivacy", { origin: "offlineApps" });
   },
 
   receiveMessage(msg) {
     switch (msg.name) {
       case "OfflineApps:CheckUsage":
         let uri = makeURI(msg.data.uri);
         if (this._usedMoreThanWarnQuota(uri)) {
           this.warnUsage(msg.target, uri);
--- a/browser/base/content/test/alerts/browser_notification_open_settings.js
+++ b/browser/base/content/test/alerts/browser_notification_open_settings.js
@@ -1,58 +1,40 @@
 "use strict";
 
 var notificationURL = "http://example.org/browser/browser/base/content/test/alerts/file_dom_notifications.html";
-var useOldPrefs = Services.prefs.getBoolPref("browser.preferences.useOldOrganization");
-var expectedURL = useOldPrefs ? "about:preferences#content"
-                              : "about:preferences#privacy";
-
+var expectedURL = "about:preferences#privacy";
 
 add_task(async function test_settingsOpen_observer() {
   info("Opening a dummy tab so openPreferences=>switchToTabHavingURI doesn't use the blank tab.");
   await BrowserTestUtils.withNewTab({
     gBrowser,
     url: "about:robots"
   }, async function dummyTabTask(aBrowser) {
-    // Ensure preferences is loaded before removing the tab. In the "new prefs", all categories
-    // get initialized on page load since we need to be able to search them. Sync is *very*
-    // slow to load and therefore we need to wait for it to load when testing the "new prefs".
-    // For "old prefs" we only load the actual visited categories so we don't have this problem,
-    // as well, the "sync-pane-loaded" notification is not sent on "old prefs".
-    let syncPaneLoadedPromise = useOldPrefs || TestUtils.topicObserved("sync-pane-loaded", () => true);
-
     let tabPromise = BrowserTestUtils.waitForNewTab(gBrowser, expectedURL);
     info("simulate a notifications-open-settings notification");
     let uri = NetUtil.newURI("https://example.com");
     let principal = Services.scriptSecurityManager.createCodebasePrincipal(uri, {});
     Services.obs.notifyObservers(principal, "notifications-open-settings");
     let tab = await tabPromise;
     ok(tab, "The notification settings tab opened");
-    await syncPaneLoadedPromise;
     await BrowserTestUtils.removeTab(tab);
   });
 });
 
 add_task(async function test_settingsOpen_button() {
   let pm = Services.perms;
   info("Adding notification permission");
   pm.add(makeURI(notificationURL), "desktop-notification", pm.ALLOW_ACTION);
 
   try {
     await BrowserTestUtils.withNewTab({
       gBrowser,
       url: notificationURL
     }, async function tabTask(aBrowser) {
-      // Ensure preferences is loaded before removing the tab. In the "new prefs", all categories
-      // get initialized on page load since we need to be able to search them. Sync is *very*
-      // slow to load and therefore we need to wait for it to load when testing the "new prefs".
-      // For "old prefs" we only load the actual visited categories so we don't have this problem,
-      // as well, the "sync-pane-loaded" notification is not sent on "old prefs".
-      let syncPaneLoadedPromise = useOldPrefs || TestUtils.topicObserved("sync-pane-loaded", () => true);
-
       info("Waiting for notification");
       await openNotification(aBrowser, "showNotification2");
 
       let alertWindow = Services.wm.getMostRecentWindow("alert:alert");
       if (!alertWindow) {
         ok(true, "Notifications don't use XUL windows on all platforms.");
         await closeNotification(aBrowser);
         return;
@@ -62,17 +44,16 @@ add_task(async function test_settingsOpe
       let tabPromise = BrowserTestUtils.waitForNewTab(gBrowser, expectedURL);
       let openSettingsMenuItem = alertWindow.document.getElementById("openSettingsMenuItem");
       openSettingsMenuItem.click();
 
       info("Waiting for notification settings tab");
       let tab = await tabPromise;
       ok(tab, "The notification settings tab opened");
 
-      await syncPaneLoadedPromise;
       await closePromise;
       await BrowserTestUtils.removeTab(tab);
     });
   } finally {
     info("Removing notification permission");
     pm.remove(makeURI(notificationURL), "desktop-notification");
   }
 });
--- a/browser/base/content/test/general/browser_datachoices_notification.js
+++ b/browser/base/content/test/general/browser_datachoices_notification.js
@@ -78,25 +78,20 @@ function triggerInfoBar(expectedTimeoutM
 }
 
 var checkInfobarButton = async function(aNotification) {
   // Check that the button on the data choices infobar does the right thing.
   let buttons = aNotification.getElementsByTagName("button");
   Assert.equal(buttons.length, 1, "There is 1 button in the data reporting notification.");
   let button = buttons[0];
 
-  // Add an observer to ensure the "advanced" pane opened (but don't bother
-  // closing it - we close the entire window when done.)
-  let paneLoadedPromise = promiseTopicObserved("advanced-pane-loaded");
-
   // Click on the button.
   button.click();
 
   // Wait for the preferences panel to open.
-  await paneLoadedPromise;
   await promiseNextTick();
 };
 
 add_task(async function setup() {
   const bypassNotification = Preferences.get(PREF_BYPASS_NOTIFICATION, true);
   const currentPolicyVersion = Preferences.get(PREF_CURRENT_POLICY_VERSION, 1);
 
   // Register a cleanup function to reset our preferences.
--- a/browser/base/content/test/general/browser_offlineQuotaNotification.js
+++ b/browser/base/content/test/general/browser_offlineQuotaNotification.js
@@ -10,17 +10,16 @@ const URL = "http://mochi.test:8888/brow
 
 registerCleanupFunction(function() {
   // Clean up after ourself
   let uri = Services.io.newURI(URL);
   let principal = Services.scriptSecurityManager.createCodebasePrincipal(uri, {});
   Services.perms.removeFromPrincipal(principal, "offline-app");
   Services.prefs.clearUserPref("offline-apps.quota.warn");
   Services.prefs.clearUserPref("offline-apps.allow_by_default");
-  Services.prefs.clearUserPref("browser.preferences.useOldOrganization");
   let {OfflineAppCacheHelper} = Components.utils.import("resource:///modules/offlineAppCache.jsm", {});
   OfflineAppCacheHelper.clear();
 });
 
 // Same as the other one, but for in-content preferences
 function checkInContentPreferences(win) {
   let doc = win.document;
   let sel = doc.getElementById("categories").selectedItems[0].id;
@@ -29,17 +28,16 @@ function checkInContentPreferences(win) 
   // all good, we are done.
   win.close();
   finish();
 }
 
 function test() {
   waitForExplicitFinish();
 
-  Services.prefs.setBoolPref("browser.preferences.useOldOrganization", false);
   Services.prefs.setBoolPref("offline-apps.allow_by_default", false);
 
   // Open a new tab.
   gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, URL);
   registerCleanupFunction(() => gBrowser.removeCurrentTab());
 
 
   Promise.all([
--- a/browser/base/content/test/general/browser_storagePressure_notification.js
+++ b/browser/base/content/test/general/browser_storagePressure_notification.js
@@ -8,50 +8,23 @@ function notifyStoragePressure(usage = 1
   let usageWrapper = Cc["@mozilla.org/supports-PRUint64;1"]
                      .createInstance(Ci.nsISupportsPRUint64);
   usageWrapper.data = usage;
   Services.obs.notifyObservers(usageWrapper, "QuotaManager::StoragePressure");
   return notifyPromise;
 }
 
 function openAboutPrefPromise() {
-  let useOldOrganization = Services.prefs.getBoolPref("browser.preferences.useOldOrganization");
-  let targetURL = useOldOrganization ? "about:preferences#advanced" : "about:preferences#privacy";
   let promises = [
-    BrowserTestUtils.waitForLocationChange(gBrowser, targetURL),
-    TestUtils.topicObserved("advanced-pane-loaded", () => true)
+    BrowserTestUtils.waitForLocationChange(gBrowser, "about:preferences#privacy"),
+    TestUtils.topicObserved("privacy-pane-loaded", () => true)
   ];
   return Promise.all(promises);
 }
 
-async function testOverUsageThresholdNotification() {
-  await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.enabled", true]]});
-  await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.pressureNotification.minIntervalMS", 0]]});
-  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, "https://example.com");
-
-  const BYTES_IN_GIGABYTE = 1073741824;
-  const USAGE_THRESHOLD_BYTES = BYTES_IN_GIGABYTE *
-    Services.prefs.getIntPref("browser.storageManager.pressureNotification.usageThresholdGB");
-  await notifyStoragePressure(USAGE_THRESHOLD_BYTES);
-  let notificationbox = document.getElementById("high-priority-global-notificationbox");
-  let notification = notificationbox.getNotificationWithValue("storage-pressure-notification");
-  ok(notification instanceof XULElement, "Should display storage pressure notification");
-
-  let prefBtn = notification.getElementsByTagName("button")[1];
-  let aboutPrefPromise = openAboutPrefPromise();
-  prefBtn.doCommand();
-  await aboutPrefPromise;
-  let aboutPrefTab = gBrowser.selectedTab;
-  let prefDoc = gBrowser.selectedBrowser.contentDocument;
-  let siteDataGroup = prefDoc.getElementById("siteDataGroup");
-  is_element_visible(siteDataGroup, "Should open to the siteDataGroup section in about:preferences");
-  await BrowserTestUtils.removeTab(aboutPrefTab);
-  await BrowserTestUtils.removeTab(tab);
-}
-
 // Test only displaying notification once within the given interval
 add_task(async function() {
   const TEST_NOTIFICATION_INTERVAL_MS = 2000;
   await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.enabled", true]]});
   await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.pressureNotification.minIntervalMS", TEST_NOTIFICATION_INTERVAL_MS]]});
 
   await notifyStoragePressure();
   let notificationbox = document.getElementById("high-priority-global-notificationbox");
@@ -67,22 +40,38 @@ add_task(async function() {
   await notifyStoragePressure();
   notification = notificationbox.getNotificationWithValue("storage-pressure-notification");
   ok(notification instanceof XULElement, "Should display storage pressure notification after the given interval");
   notification.close();
 });
 
 // Test guiding user to the about:preferences when usage exceeds the given threshold
 add_task(async function() {
-  // Test for the old about:preferences
-  await SpecialPowers.pushPrefEnv({set: [["browser.preferences.useOldOrganization", true]]});
-  await testOverUsageThresholdNotification();
-  // Test for the new about:preferences
-  await SpecialPowers.pushPrefEnv({set: [["browser.preferences.useOldOrganization", false]]});
-  await testOverUsageThresholdNotification();
+  await SpecialPowers.pushPrefEnv({ set: [["browser.storageManager.enabled", true]] });
+  await SpecialPowers.pushPrefEnv({ set: [["browser.storageManager.pressureNotification.minIntervalMS", 0]] });
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, "https://example.com");
+
+  const BYTES_IN_GIGABYTE = 1073741824;
+  const USAGE_THRESHOLD_BYTES = BYTES_IN_GIGABYTE *
+    Services.prefs.getIntPref("browser.storageManager.pressureNotification.usageThresholdGB");
+  await notifyStoragePressure(USAGE_THRESHOLD_BYTES);
+  let notificationbox = document.getElementById("high-priority-global-notificationbox");
+  let notification = notificationbox.getNotificationWithValue("storage-pressure-notification");
+  ok(notification instanceof XULElement, "Should display storage pressure notification");
+
+  let prefBtn = notification.getElementsByTagName("button")[1];
+  let aboutPrefPromise = openAboutPrefPromise();
+  prefBtn.doCommand();
+  await aboutPrefPromise;
+  let aboutPrefTab = gBrowser.selectedTab;
+  let prefDoc = gBrowser.selectedBrowser.contentDocument;
+  let siteDataGroup = prefDoc.getElementById("siteDataGroup");
+  is_element_visible(siteDataGroup, "Should open to the siteDataGroup section in about:preferences");
+  await BrowserTestUtils.removeTab(aboutPrefTab);
+  await BrowserTestUtils.removeTab(tab);
 });
 
 // Test not displaying the 2nd notification if one is already being displayed
 add_task(async function() {
   const TEST_NOTIFICATION_INTERVAL_MS = 0;
   await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.enabled", true]]});
   await SpecialPowers.pushPrefEnv({set: [["browser.storageManager.pressureNotification.minIntervalMS", TEST_NOTIFICATION_INTERVAL_MS]]});
 
--- a/browser/base/content/test/urlbar/browser_urlbarAboutHomeLoading.js
+++ b/browser/base/content/test/urlbar/browser_urlbarAboutHomeLoading.js
@@ -6,17 +6,17 @@ const {TabStateFlusher} = Cu.import("res
 /**
  * Test what happens if loading a URL that should clear the
  * location bar after a parent process URL.
  */
 add_task(async function clearURLBarAfterParentProcessURL() {
   let tab = await new Promise(resolve => {
     gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, "about:preferences");
     let newTabBrowser = gBrowser.getBrowserForTab(gBrowser.selectedTab);
-    newTabBrowser.addEventListener("Initialized", function() {
+    newTabBrowser.addEventListener("Initialized", async function() {
       resolve(gBrowser.selectedTab);
     }, {capture: true, once: true});
   });
   document.getElementById("home-button").click();
   await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
   is(gURLBar.value, "", "URL bar should be empty");
   is(tab.linkedBrowser.userTypedValue, null, "The browser should have no recorded userTypedValue");
   await BrowserTestUtils.removeTab(tab);
@@ -25,17 +25,17 @@ add_task(async function clearURLBarAfter
 /**
  * Same as above, but open the tab without passing the URL immediately
  * which changes behaviour in tabbrowser.xml.
  */
 add_task(async function clearURLBarAfterParentProcessURLInExistingTab() {
   let tab = await new Promise(resolve => {
     gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser);
     let newTabBrowser = gBrowser.getBrowserForTab(gBrowser.selectedTab);
-    newTabBrowser.addEventListener("Initialized", function() {
+    newTabBrowser.addEventListener("Initialized", async function() {
       resolve(gBrowser.selectedTab);
     }, {capture: true, once: true});
     newTabBrowser.loadURI("about:preferences");
   });
   document.getElementById("home-button").click();
   await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
   is(gURLBar.value, "", "URL bar should be empty");
   is(tab.linkedBrowser.userTypedValue, null, "The browser should have no recorded userTypedValue");
--- a/browser/base/content/utilityOverlay.js
+++ b/browser/base/content/utilityOverlay.js
@@ -731,27 +731,16 @@ function openAboutDialog() {
 
 function openPreferences(paneID, extraArgs) {
   let histogram = Services.telemetry.getHistogramById("FX_PREFERENCES_OPENED_VIA");
   if (extraArgs && extraArgs.origin) {
     histogram.add(extraArgs.origin);
   } else {
     histogram.add("other");
   }
-  function switchToAdvancedSubPane(doc) {
-    if (extraArgs && extraArgs.advancedTab) {
-      // After the Preferences reorg works in Bug 1335907, no more advancedPrefs element.
-      // The old Preference is pref-off behind `browser.preferences.useOldOrganization` on Nightly.
-      // During the transition between the old and new Preferences, should do checking before proceeding.
-      let advancedPaneTabs = doc.getElementById("advancedPrefs");
-      if (advancedPaneTabs) {
-        advancedPaneTabs.selectedTab = doc.getElementById(extraArgs.advancedTab);
-      }
-    }
-  }
 
   // This function is duplicated from preferences.js.
   function internalPrefCategoryNameToFriendlyName(aName) {
     return (aName || "").replace(/^pane./, function(toReplace) { return toReplace[4].toLowerCase(); });
   }
 
   let win = Services.wm.getMostRecentWindow("navigator:browser");
   let friendlyCategoryName = internalPrefCategoryNameToFriendlyName(paneID);
@@ -761,64 +750,56 @@ function openPreferences(paneID, extraAr
     let urlParams = extraArgs.urlParams;
     for (let name in urlParams) {
       if (urlParams[name] !== undefined) {
         params.set(name, urlParams[name]);
       }
     }
   }
   let preferencesURL = "about:preferences" + (params ? "?" + params : "") +
-                       (friendlyCategoryName ? "#" + friendlyCategoryName : "");
+    (friendlyCategoryName ? "#" + friendlyCategoryName : "");
   let newLoad = true;
   let browser = null;
   if (!win) {
     const Cc = Components.classes;
     const Ci = Components.interfaces;
     let windowArguments = Cc["@mozilla.org/array;1"]
-                            .createInstance(Ci.nsIMutableArray);
+      .createInstance(Ci.nsIMutableArray);
     let supportsStringPrefURL = Cc["@mozilla.org/supports-string;1"]
-                                  .createInstance(Ci.nsISupportsString);
+      .createInstance(Ci.nsISupportsString);
     supportsStringPrefURL.data = preferencesURL;
     windowArguments.appendElement(supportsStringPrefURL);
 
     win = Services.ww.openWindow(null, Services.prefs.getCharPref("browser.chromeURL"),
-                                 "_blank", "chrome,dialog=no,all", windowArguments);
+      "_blank", "chrome,dialog=no,all", windowArguments);
   } else {
     let shouldReplaceFragment = friendlyCategoryName ? "whenComparingAndReplace" : "whenComparing";
     newLoad = !win.switchToTabHavingURI(preferencesURL, true, {
       ignoreFragment: shouldReplaceFragment,
       replaceQueryString: true,
       triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
     });
     browser = win.gBrowser.selectedBrowser;
   }
 
   if (newLoad) {
-    Services.obs.addObserver(function advancedPaneLoadedObs(prefWin, topic, data) {
+    Services.obs.addObserver(function panesLoadedObs(prefWin, topic, data) {
       if (!browser) {
         browser = win.gBrowser.selectedBrowser;
       }
       if (prefWin != browser.contentWindow) {
         return;
       }
-      Services.obs.removeObserver(advancedPaneLoadedObs, "advanced-pane-loaded");
-      switchToAdvancedSubPane(browser.contentDocument);
-    }, "advanced-pane-loaded");
-  } else {
-    if (paneID) {
-      browser.contentWindow.gotoPref(paneID);
-    }
-    switchToAdvancedSubPane(browser.contentDocument);
+      Services.obs.removeObserver(panesLoadedObs, "sync-pane-loaded");
+    }, "sync-pane-loaded");
+  } else if (paneID) {
+    browser.contentWindow.gotoPref(paneID);
   }
 }
 
-function openAdvancedPreferences(tabID, origin) {
-  openPreferences("paneAdvanced", { "advancedTab": tabID, origin });
-}
-
 /**
  * Opens the troubleshooting information (about:support) page for this version
  * of the application.
  */
 function openTroubleshootingPage() {
   openUILinkIn("about:support", "tab");
 }
 
--- a/browser/components/about/AboutRedirector.cpp
+++ b/browser/components/about/AboutRedirector.cpp
@@ -16,17 +16,16 @@
 #include "mozilla/Preferences.h"
 #include "nsServiceManagerUtils.h"
 
 namespace mozilla {
 namespace browser {
 
 NS_IMPL_ISUPPORTS(AboutRedirector, nsIAboutModule)
 
-bool AboutRedirector::sUseOldPreferences = false;
 bool AboutRedirector::sActivityStreamEnabled = false;
 bool AboutRedirector::sActivityStreamAboutHomeEnabled = false;
 
 struct RedirEntry {
   const char* id;
   const char* url;
   uint32_t flags;
 };
@@ -145,38 +144,30 @@ AboutRedirector::NewChannel(nsIURI* aURI
   NS_ASSERTION(result, "must not be null");
 
   nsAutoCString path = GetAboutModuleName(aURI);
 
   nsresult rv;
   nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
   NS_ENSURE_SUCCESS(rv, rv);
 
-  static bool sPrefCacheInited = false;
-  if (!sPrefCacheInited) {
-    Preferences::AddBoolVarCache(&sUseOldPreferences,
-                                 "browser.preferences.useOldOrganization");
-    sPrefCacheInited = true;
-  }
   LoadActivityStreamPrefs();
 
   for (auto & redir : kRedirMap) {
     if (!strcmp(path.get(), redir.id)) {
       nsAutoCString url;
 
       if (path.EqualsLiteral("newtab") ||
           (path.EqualsLiteral("home") && sActivityStreamEnabled && sActivityStreamAboutHomeEnabled)) {
         // let the aboutNewTabService decide where to redirect
         nsCOMPtr<nsIAboutNewTabService> aboutNewTabService =
           do_GetService("@mozilla.org/browser/aboutnewtab-service;1", &rv);
         NS_ENSURE_SUCCESS(rv, rv);
         rv = aboutNewTabService->GetDefaultURL(url);
         NS_ENSURE_SUCCESS(rv, rv);
-      } else if (path.EqualsLiteral("preferences") && !sUseOldPreferences) {
-        url.AssignASCII("chrome://browser/content/preferences/in-content-new/preferences.xul");
       }
       // fall back to the specified url in the map
       if (url.IsEmpty()) {
         url.AssignASCII(redir.url);
       }
 
       nsCOMPtr<nsIChannel> tempChannel;
       nsCOMPtr<nsIURI> tempURI;
--- a/browser/components/about/AboutRedirector.h
+++ b/browser/components/about/AboutRedirector.h
@@ -21,17 +21,16 @@ public:
 
   static nsresult
     Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
 
 protected:
   virtual ~AboutRedirector() {}
 
 private:
-  static bool sUseOldPreferences;
   static bool sActivityStreamEnabled;
   static bool sActivityStreamAboutHomeEnabled;
 
   static void LoadActivityStreamPrefs();
 };
 
 } // namespace browser
 } // namespace mozilla
--- a/browser/components/customizableui/test/browser_1087303_button_preferences.js
+++ b/browser/components/customizableui/test/browser_1087303_button_preferences.js
@@ -39,17 +39,18 @@ add_task(function asyncCleanup() {
 function waitForPageLoad(aTab) {
   return new Promise((resolve, reject) => {
 
     let timeoutId = setTimeout(() => {
       aTab.linkedBrowser.removeEventListener("load", onTabLoad, true);
       reject("Page didn't load within " + 20000 + "ms");
     }, 20000);
 
-    function onTabLoad(event) {
+    async function onTabLoad(event) {
       clearTimeout(timeoutId);
       aTab.linkedBrowser.removeEventListener("load", onTabLoad, true);
       info("Tab event received: load");
       resolve();
-   }
+    }
+
     aTab.linkedBrowser.addEventListener("load", onTabLoad, true, true);
   });
 }
--- a/browser/components/customizableui/test/browser_synced_tabs_menu.js
+++ b/browser/components/customizableui/test/browser_synced_tabs_menu.js
@@ -87,17 +87,17 @@ async function openPrefsFromMenuPanel(ex
   let subpanel = document.getElementById(expectedPanelId)
   ok(!subpanel.hidden, "sync setup element is visible");
 
   // Find and click the "setup" button.
   let setupButton = subpanel.querySelector(".PanelUI-remotetabs-prefs-button");
   setupButton.click();
 
   await new Promise(resolve => {
-    let handler = (e) => {
+    let handler = async(e) => {
       if (e.originalTarget != gBrowser.selectedBrowser.contentDocument ||
           e.target.location.href == "about:blank") {
         info("Skipping spurious 'load' event for " + e.target.location.href);
         return;
       }
       gBrowser.selectedBrowser.removeEventListener("load", handler, true);
       resolve();
     }
--- a/browser/components/feeds/FeedWriter.js
+++ b/browser/components/feeds/FeedWriter.js
@@ -824,17 +824,17 @@ FeedWriter.prototype = {
       // window object.
       return;
     }
     LOG(`received message from parent ${msg.name}`);
     switch (msg.name) {
       case "FeedWriter:PreferenceUpdated":
         // This is called when browser-feeds.js spots a pref change
         // This will happen when
-        // - about:preferences#applications changes
+        // - about:preferences#general changes
         // - another feed reader page changes the preference
         // - when this page itself changes the select and there isn't a redirect
         //   bookmarks and launching an external app means the page stays open after subscribe
         const feedType = this._getFeedType();
         LOG(`Got prefChange! ${JSON.stringify(msg.data)} current type: ${feedType}`);
         let feedTypePref = msg.data.default;
         if (feedType in msg.data) {
           feedTypePref = msg.data[feedType];
--- a/browser/components/nsBrowserGlue.js
+++ b/browser/components/nsBrowserGlue.js
@@ -296,21 +296,17 @@ BrowserGlue.prototype = {
     Cu.import("resource://services-sync/main.js");
     Weave.Service.scheduler.delayedAutoConnect(delay);
   },
 
   // nsIObserver implementation
   observe: function BG_observe(subject, topic, data) {
     switch (topic) {
       case "notifications-open-settings":
-        if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-          this._openPreferences("content", { origin: "notifOpenSettings" });
-        } else {
-          this._openPreferences("privacy", { origin: "notifOpenSettings" });
-        }
+        this._openPreferences("privacy", { origin: "notifOpenSettings" });
         break;
       case "prefservice:after-app-defaults":
         this._onAppDefaults();
         break;
       case "final-ui-startup":
         this._beforeUIStartup();
         break;
       case "browser-delayed-startup-finished":
--- a/browser/components/preferences/applicationManager.js
+++ b/browser/components/preferences/applicationManager.js
@@ -1,35 +1,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-/* import-globals-from in-content/applications.js */
+/* import-globals-from in-content/main.js */
 
 var Cc = Components.classes;
 var Ci = Components.interfaces;
 
 var gAppManagerDialog = {
   _removed: [],
 
   init: function appManager_init() {
     this.handlerInfo = window.arguments[0];
-    // The applicationManager will be used
-    // in in-content's gApplicationsPane and in-content-new's gMainPane.
-    // Remove this once we use the in-content-new preferences page.
-    var pane;
-    if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-      Services.scriptloader.loadSubScript("chrome://browser/content/preferences/in-content/applications.js",
-                                          window);
-      pane = gApplicationsPane;
-    } else {
-      Services.scriptloader.loadSubScript("chrome://browser/content/preferences/in-content-new/main.js",
-                                          window);
-      pane = gMainPane;
-    }
+    Services.scriptloader.loadSubScript("chrome://browser/content/preferences/in-content/main.js",
+      window);
+    var pane = gMainPane;
     var bundle = document.getElementById("appManagerBundle");
     var contentText;
     if (this.handlerInfo.type == TYPE_MAYBE_FEED)
       contentText = bundle.getString("handleWebFeeds");
     else {
       var description = pane._describeType(this.handlerInfo);
       var key =
         (this.handlerInfo.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo) ? "handleFile"
--- a/browser/components/preferences/handlers.xml
+++ b/browser/components/preferences/handlers.xml
@@ -1,14 +1,14 @@
 <?xml version="1.0"?>
 
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<!-- import-globals-from in-content/applications.js -->
+<!-- import-globals-from in-content/main.js -->
 
 <!DOCTYPE overlay [
   <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd">
   <!ENTITY % applicationsDTD SYSTEM "chrome://browser/locale/preferences/applications.dtd">
   <!ENTITY % containersDTD SYSTEM "chrome://browser/locale/preferences/containers.dtd">
   %brandDTD;
   %applicationsDTD;
   %containersDTD;
@@ -51,32 +51,26 @@
         <xul:hbox flex="1" align="center" xbl:inherits="tooltiptext=typeDescription">
           <xul:image src="moz-icon://goat?size=16" class="typeIcon"
                      xbl:inherits="src=typeIcon" height="16" width="16"/>
           <xul:label flex="1" crop="end" xbl:inherits="value=typeDescription"/>
         </xul:hbox>
         <xul:hbox flex="1">
           <xul:menulist class="actionsMenu" flex="1" crop="end" selectedIndex="1"
                         xbl:inherits="tooltiptext=actionDescription"
-                        oncommand="Services.prefs.getBoolPref('browser.preferences.useOldOrganization') ?
-                          gApplicationsPane.onSelectAction(event.originalTarget) :
-                          gMainPane.onSelectAction(event.originalTarget)">
+                        oncommand="gMainPane.onSelectAction(event.originalTarget)">
             <xul:menupopup/>
           </xul:menulist>
         </xul:hbox>
       </xul:hbox>
     </content>
 
     <implementation>
       <constructor>
-        if (Services.prefs.getBoolPref("browser.preferences.useOldOrganization")) {
-          gApplicationsPane.rebuildActionsMenu();
-        } else {
-          gMainPane.rebuildActionsMenu();
-        }
+        gMainPane.rebuildActionsMenu();
       </constructor>
     </implementation>
 
   </binding>
 
   <binding id="container">
     <content>
       <xul:hbox flex="1" equalsize="always">
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/containers.js
+++ /dev/null
@@ -1,99 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* import-globals-from preferences.js */
-
-Components.utils.import("resource://gre/modules/AppConstants.jsm");
-Components.utils.import("resource://gre/modules/ContextualIdentityService.jsm");
-
-const containersBundle = Services.strings.createBundle("chrome://browser/locale/preferences/containers.properties");
-
-const defaultContainerIcon = "fingerprint";
-const defaultContainerColor = "blue";
-
-let gContainersPane = {
-
-  init() {
-    this._list = document.getElementById("containersView");
-
-    document.getElementById("backContainersLink").addEventListener("click", function() {
-      gotoPref("general");
-    });
-
-    this._rebuildView();
-  },
-
-  _rebuildView() {
-    const containers = ContextualIdentityService.getPublicIdentities();
-    while (this._list.firstChild) {
-      this._list.firstChild.remove();
-    }
-    for (let container of containers) {
-      let item = document.createElement("richlistitem");
-      item.setAttribute("containerName", ContextualIdentityService.getUserContextLabel(container.userContextId));
-      item.setAttribute("containerIcon", container.icon);
-      item.setAttribute("containerColor", container.color);
-      item.setAttribute("userContextId", container.userContextId);
-
-      this._list.appendChild(item);
-    }
-  },
-
-  async onRemoveClick(button) {
-    let userContextId = parseInt(button.getAttribute("value"), 10);
-
-    let count = ContextualIdentityService.countContainerTabs(userContextId);
-    if (count > 0) {
-      let bundlePreferences = document.getElementById("bundlePreferences");
-
-      let title = bundlePreferences.getString("removeContainerAlertTitle");
-      let message = PluralForm.get(count, bundlePreferences.getString("removeContainerMsg"))
-                              .replace("#S", count)
-      let okButton = bundlePreferences.getString("removeContainerOkButton");
-      let cancelButton = bundlePreferences.getString("removeContainerButton2");
-
-      let buttonFlags = (Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_0) +
-                        (Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_1);
-
-      let rv = Services.prompt.confirmEx(window, title, message, buttonFlags,
-                                         okButton, cancelButton, null, null, {});
-      if (rv != 0) {
-        return;
-      }
-
-      await ContextualIdentityService.closeContainerTabs(userContextId);
-    }
-
-    ContextualIdentityService.remove(userContextId);
-    this._rebuildView();
-  },
-
-  onPreferenceClick(button) {
-    this.openPreferenceDialog(button.getAttribute("value"));
-  },
-
-  onAddButtonClick(button) {
-    this.openPreferenceDialog(null);
-  },
-
-  openPreferenceDialog(userContextId) {
-    let identity = {
-      name: "",
-      icon: defaultContainerIcon,
-      color: defaultContainerColor
-    };
-    let title;
-    if (userContextId) {
-      identity = ContextualIdentityService.getPublicIdentityFromId(userContextId);
-      // This is required to get the translation string from defaults
-      identity.name = ContextualIdentityService.getUserContextLabel(identity.userContextId);
-      title = containersBundle.formatStringFromName("containers.updateContainerTitle", [identity.name], 1);
-    }
-
-    const params = { userContextId, identity, windowTitle: title };
-    gSubDialog.open("chrome://browser/content/preferences/containers.xul",
-                     null, params);
-  }
-
-};
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/containers.xul
+++ /dev/null
@@ -1,45 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-<!-- Containers panel -->
-
-<script type="application/javascript"
-        src="chrome://browser/content/preferences/in-content-new/containers.js"/>
-
-<preferences id="containerPreferences" hidden="true" data-category="paneContainer">
-  <!-- Containers -->
-  <preference id="privacy.userContext.enabled"
-              name="privacy.userContext.enabled"
-              type="bool"/>
-
-</preferences>
-
-<hbox hidden="true"
-      class="container-header-links"
-      data-category="paneContainers">
-  <label class="text-link" id="backContainersLink">&backLink2.label;</label>
-</hbox>
-
-<hbox id="header-containers"
-      class="header"
-      hidden="true"
-      data-category="paneContainers">
-  <label class="header-name" flex="1">&paneContainers.title;</label>
-</hbox>
-
-<!-- Containers -->
-<groupbox id="browserContainersGroupPane" data-category="paneContainers" hidden="true"
-          data-hidden-from-search="true" data-subpanel="true">
-  <vbox id="browserContainersbox">
-
-    <richlistbox id="containersView" orient="vertical" persist="lastSelectedType"
-                 flex="1">
-    </richlistbox>
-  </vbox>
-  <vbox>
-    <hbox flex="1">
-      <button onclick="gContainersPane.onAddButtonClick();" accesskey="&addButton.accesskey;" label="&addButton.label;"/>
-    </hbox>
-  </vbox>
-</groupbox>
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/jar.mn
+++ /dev/null
@@ -1,15 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-browser.jar:
-   content/browser/preferences/in-content-new/preferences.js
-*  content/browser/preferences/in-content-new/preferences.xul
-   content/browser/preferences/in-content-new/subdialogs.js
-
-   content/browser/preferences/in-content-new/main.js
-   content/browser/preferences/in-content-new/search.js
-   content/browser/preferences/in-content-new/privacy.js
-   content/browser/preferences/in-content-new/containers.js
-   content/browser/preferences/in-content-new/sync.js
-   content/browser/preferences/in-content-new/findInPage.js
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/main.js
+++ /dev/null
@@ -1,3263 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* import-globals-from preferences.js */
-/* import-globals-from ../../../../toolkit/mozapps/preferences/fontbuilder.js */
-/* import-globals-from ../../../base/content/aboutDialog-appUpdater.js */
-
-Components.utils.import("resource://gre/modules/Services.jsm");
-Components.utils.import("resource://gre/modules/Downloads.jsm");
-Components.utils.import("resource://gre/modules/FileUtils.jsm");
-Components.utils.import("resource:///modules/ShellService.jsm");
-Components.utils.import("resource:///modules/TransientPrefs.jsm");
-Components.utils.import("resource://gre/modules/Services.jsm");
-Components.utils.import("resource://gre/modules/AppConstants.jsm");
-Components.utils.import("resource://gre/modules/DownloadUtils.jsm");
-Components.utils.import("resource://gre/modules/LoadContextInfo.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "CloudStorage",
-                                  "resource://gre/modules/CloudStorage.jsm");
-
-// Constants & Enumeration Values
-const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
-const TYPE_MAYBE_VIDEO_FEED = "application/vnd.mozilla.maybe.video.feed";
-const TYPE_MAYBE_AUDIO_FEED = "application/vnd.mozilla.maybe.audio.feed";
-const TYPE_PDF = "application/pdf";
-
-const PREF_PDFJS_DISABLED = "pdfjs.disabled";
-const TOPIC_PDFJS_HANDLER_CHANGED = "pdfjs:handlerChanged";
-
-const PREF_DISABLED_PLUGIN_TYPES = "plugin.disable_full_page_plugin_for_types";
-
-// Preferences that affect which entries to show in the list.
-const PREF_SHOW_PLUGINS_IN_LIST = "browser.download.show_plugins_in_list";
-const PREF_HIDE_PLUGINS_WITHOUT_EXTENSIONS =
-  "browser.download.hide_plugins_without_extensions";
-
-/*
- * Preferences where we store handling information about the feed type.
- *
- * browser.feeds.handler
- * - "bookmarks", "reader" (clarified further using the .default preference),
- *   or "ask" -- indicates the default handler being used to process feeds;
- *   "bookmarks" is obsolete; to specify that the handler is bookmarks,
- *   set browser.feeds.handler.default to "bookmarks";
- *
- * browser.feeds.handler.default
- * - "bookmarks", "client" or "web" -- indicates the chosen feed reader used
- *   to display feeds, either transiently (i.e., when the "use as default"
- *   checkbox is unchecked, corresponds to when browser.feeds.handler=="ask")
- *   or more permanently (i.e., the item displayed in the dropdown in Feeds
- *   preferences)
- *
- * browser.feeds.handler.webservice
- * - the URL of the currently selected web service used to read feeds
- *
- * browser.feeds.handlers.application
- * - nsIFile, stores the current client-side feed reading app if one has
- *   been chosen
- */
-const PREF_FEED_SELECTED_APP    = "browser.feeds.handlers.application";
-const PREF_FEED_SELECTED_WEB    = "browser.feeds.handlers.webservice";
-const PREF_FEED_SELECTED_ACTION = "browser.feeds.handler";
-const PREF_FEED_SELECTED_READER = "browser.feeds.handler.default";
-
-const PREF_VIDEO_FEED_SELECTED_APP    = "browser.videoFeeds.handlers.application";
-const PREF_VIDEO_FEED_SELECTED_WEB    = "browser.videoFeeds.handlers.webservice";
-const PREF_VIDEO_FEED_SELECTED_ACTION = "browser.videoFeeds.handler";
-const PREF_VIDEO_FEED_SELECTED_READER = "browser.videoFeeds.handler.default";
-
-const PREF_AUDIO_FEED_SELECTED_APP    = "browser.audioFeeds.handlers.application";
-const PREF_AUDIO_FEED_SELECTED_WEB    = "browser.audioFeeds.handlers.webservice";
-const PREF_AUDIO_FEED_SELECTED_ACTION = "browser.audioFeeds.handler";
-const PREF_AUDIO_FEED_SELECTED_READER = "browser.audioFeeds.handler.default";
-
-// The nsHandlerInfoAction enumeration values in nsIHandlerInfo identify
-// the actions the application can take with content of various types.
-// But since nsIHandlerInfo doesn't support plugins, there's no value
-// identifying the "use plugin" action, so we use this constant instead.
-const kActionUsePlugin = 5;
-
-const ICON_URL_APP = AppConstants.platform == "linux" ?
-                     "moz-icon://dummy.exe?size=16" :
-                     "chrome://browser/skin/preferences/application.png";
-
-// For CSS. Can be one of "ask", "save", "plugin" or "feed". If absent, the icon URL
-// was set by us to a custom handler icon and CSS should not try to override it.
-const APP_ICON_ATTR_NAME = "appHandlerIcon";
-
-XPCOMUtils.defineLazyModuleGetter(this, "OS",
-                                  "resource://gre/modules/osfile.jsm");
-
-if (AppConstants.E10S_TESTING_ONLY) {
-  XPCOMUtils.defineLazyModuleGetter(this, "UpdateUtils",
-                                    "resource://gre/modules/UpdateUtils.jsm");
-}
-
-if (AppConstants.MOZ_DEV_EDITION) {
-  XPCOMUtils.defineLazyModuleGetter(this, "fxAccounts",
-                                    "resource://gre/modules/FxAccounts.jsm");
-}
-
-var gMainPane = {
-  // The set of types the app knows how to handle.  A hash of HandlerInfoWrapper
-  // objects, indexed by type.
-  _handledTypes: {},
-
-  // The list of types we can show, sorted by the sort column/direction.
-  // An array of HandlerInfoWrapper objects.  We build this list when we first
-  // load the data and then rebuild it when users change a pref that affects
-  // what types we can show or change the sort column/direction.
-  // Note: this isn't necessarily the list of types we *will* show; if the user
-  // provides a filter string, we'll only show the subset of types in this list
-  // that match that string.
-  _visibleTypes: [],
-
-  // A count of the number of times each visible type description appears.
-  // We use these counts to determine whether or not to annotate descriptions
-  // with their types to distinguish duplicate descriptions from each other.
-  // A hash of integer counts, indexed by string description.
-  _visibleTypeDescriptionCount: {},
-
-
-  // Convenience & Performance Shortcuts
-
-  // These get defined by init().
-  _brandShortName: null,
-  _prefsBundle: null,
-  _list: null,
-  _filter: null,
-
-  _prefSvc: Cc["@mozilla.org/preferences-service;1"].
-            getService(Ci.nsIPrefBranch),
-
-  _mimeSvc: Cc["@mozilla.org/mime;1"].
-            getService(Ci.nsIMIMEService),
-
-  _helperAppSvc: Cc["@mozilla.org/uriloader/external-helper-app-service;1"].
-                 getService(Ci.nsIExternalHelperAppService),
-
-  _handlerSvc: Cc["@mozilla.org/uriloader/handler-service;1"].
-               getService(Ci.nsIHandlerService),
-
-  _ioSvc: Cc["@mozilla.org/network/io-service;1"].
-          getService(Ci.nsIIOService),
-
-  _backoffIndex: 0,
-
-  /**
-   * Initialization of this.
-   */
-  init() {
-    function setEventListener(aId, aEventType, aCallback) {
-      document.getElementById(aId)
-              .addEventListener(aEventType, aCallback.bind(gMainPane));
-    }
-
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      this.updateSetDefaultBrowser();
-      let win = Services.wm.getMostRecentWindow("navigator:browser");
-
-      // Exponential backoff mechanism will delay the polling times if user doesn't
-      // trigger SetDefaultBrowser for a long time.
-      let backoffTimes = [1000, 1000, 1000, 1000, 2000, 2000, 2000, 5000, 5000, 10000];
-
-      let pollForDefaultBrowser = () => {
-        let uri = win.gBrowser.currentURI.spec;
-
-        if ((uri == "about:preferences" || uri == "about:preferences#general") &&
-            document.visibilityState == "visible") {
-          this.updateSetDefaultBrowser();
-        }
-
-        // approximately a "requestIdleInterval"
-        window.setTimeout(() => {
-          window.requestIdleCallback(pollForDefaultBrowser);
-        }, backoffTimes[this._backoffIndex + 1 < backoffTimes.length ?
-                        this._backoffIndex++ : backoffTimes.length - 1]);
-      };
-
-      window.setTimeout(() => {
-        window.requestIdleCallback(pollForDefaultBrowser);
-      }, backoffTimes[this._backoffIndex]);
-    }
-
-    this.initBrowserContainers();
-    this.buildContentProcessCountMenuList();
-
-    let performanceSettingsLink = document.getElementById("performanceSettingsLearnMore");
-    let performanceSettingsUrl = Services.urlFormatter.formatURLPref("app.support.baseURL") + "performance";
-    performanceSettingsLink.setAttribute("href", performanceSettingsUrl);
-
-    this.updateDefaultPerformanceSettingsPref();
-
-    let defaultPerformancePref =
-      document.getElementById("browser.preferences.defaultPerformanceSettings.enabled");
-    defaultPerformancePref.addEventListener("change", () => {
-      this.updatePerformanceSettingsBox({duringChangeEvent: true});
-    });
-    this.updatePerformanceSettingsBox({duringChangeEvent: false});
-
-    // set up the "use current page" label-changing listener
-    this._updateUseCurrentButton();
-    window.addEventListener("focus", this._updateUseCurrentButton.bind(this));
-
-    this.updateBrowserStartupLastSession();
-
-    if (AppConstants.platform == "win") {
-      // Functionality for "Show tabs in taskbar" on Windows 7 and up.
-      try {
-        let sysInfo = Cc["@mozilla.org/system-info;1"].
-                      getService(Ci.nsIPropertyBag2);
-        let ver = parseFloat(sysInfo.getProperty("version"));
-        let showTabsInTaskbar = document.getElementById("showTabsInTaskbar");
-        showTabsInTaskbar.hidden = ver < 6.1;
-      } catch (ex) {}
-    }
-
-    // The "closing multiple tabs" and "opening multiple tabs might slow down
-    // &brandShortName;" warnings provide options for not showing these
-    // warnings again. When the user disabled them, we provide checkboxes to
-    // re-enable the warnings.
-    if (!TransientPrefs.prefShouldBeVisible("browser.tabs.warnOnClose"))
-      document.getElementById("warnCloseMultiple").hidden = true;
-    if (!TransientPrefs.prefShouldBeVisible("browser.tabs.warnOnOpen"))
-      document.getElementById("warnOpenMany").hidden = true;
-
-    setEventListener("browser.privatebrowsing.autostart", "change",
-                     gMainPane.updateBrowserStartupLastSession);
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      setEventListener("setDefaultButton", "command",
-                       gMainPane.setDefaultBrowser);
-    }
-    setEventListener("useCurrent", "command",
-                     gMainPane.setHomePageToCurrent);
-    setEventListener("useBookmark", "command",
-                     gMainPane.setHomePageToBookmark);
-    setEventListener("restoreDefaultHomePage", "command",
-                     gMainPane.restoreDefaultHomePage);
-    setEventListener("chooseLanguage", "command",
-      gMainPane.showLanguages);
-    setEventListener("translationAttributionImage", "click",
-      gMainPane.openTranslationProviderAttribution);
-    setEventListener("translateButton", "command",
-      gMainPane.showTranslationExceptions);
-    setEventListener("font.language.group", "change",
-      gMainPane._rebuildFonts);
-    setEventListener("advancedFonts", "command",
-      gMainPane.configureFonts);
-    setEventListener("colors", "command",
-      gMainPane.configureColors);
-    setEventListener("layers.acceleration.disabled", "change",
-      gMainPane.updateHardwareAcceleration);
-    setEventListener("connectionSettings", "command",
-      gMainPane.showConnections);
-    setEventListener("browserContainersCheckbox", "command",
-      gMainPane.checkBrowserContainers);
-    setEventListener("browserContainersSettings", "command",
-      gMainPane.showContainerSettings);
-
-    // Initializes the fonts dropdowns displayed in this pane.
-    this._rebuildFonts();
-
-    this.updateOnScreenKeyboardVisibility();
-
-    // Show translation preferences if we may:
-    const prefName = "browser.translation.ui.show";
-    if (Services.prefs.getBoolPref(prefName)) {
-      let row = document.getElementById("translationBox");
-      row.removeAttribute("hidden");
-      // Showing attribution only for Bing Translator.
-      Components.utils.import("resource:///modules/translation/Translation.jsm");
-      if (Translation.translationEngine == "bing") {
-        document.getElementById("bingAttribution").removeAttribute("hidden");
-      }
-    }
-
-    if (AppConstants.E10S_TESTING_ONLY) {
-      setEventListener("e10sAutoStart", "command",
-                       gMainPane.enableE10SChange);
-      let e10sCheckbox = document.getElementById("e10sAutoStart");
-
-      let e10sPref = document.getElementById("browser.tabs.remote.autostart");
-      let e10sTempPref = document.getElementById("e10sTempPref");
-      let e10sForceEnable = document.getElementById("e10sForceEnable");
-
-      let preffedOn = e10sPref.value || e10sTempPref.value || e10sForceEnable.value;
-
-      if (preffedOn) {
-        // The checkbox is checked if e10s is preffed on and enabled.
-        e10sCheckbox.checked = Services.appinfo.browserTabsRemoteAutostart;
-
-        // but if it's force disabled, then the checkbox is disabled.
-        e10sCheckbox.disabled = !Services.appinfo.browserTabsRemoteAutostart;
-      }
-    }
-
-    if (AppConstants.MOZ_DEV_EDITION) {
-      let uAppData = OS.Constants.Path.userApplicationDataDir;
-      let ignoreSeparateProfile = OS.Path.join(uAppData, "ignore-dev-edition-profile");
-
-      setEventListener("separateProfileMode", "command", gMainPane.separateProfileModeChange);
-      let separateProfileModeCheckbox = document.getElementById("separateProfileMode");
-      setEventListener("getStarted", "click", gMainPane.onGetStarted);
-
-      OS.File.stat(ignoreSeparateProfile).then(() => separateProfileModeCheckbox.checked = false,
-                                               () => separateProfileModeCheckbox.checked = true);
-
-      fxAccounts.getSignedInUser().then(data => {
-        document.getElementById("getStarted").selectedIndex = data ? 1 : 0;
-      })
-      .catch(Cu.reportError);
-    }
-
-    // Initialize the Firefox Updates section.
-    let version = AppConstants.MOZ_APP_VERSION_DISPLAY;
-
-    // Include the build ID if this is an "a#" (nightly) build
-    if (/a\d+$/.test(version)) {
-      let buildID = Services.appinfo.appBuildID;
-      let year = buildID.slice(0, 4);
-      let month = buildID.slice(4, 6);
-      let day = buildID.slice(6, 8);
-      version += ` (${year}-${month}-${day})`;
-    }
-
-    // Append "(32-bit)" or "(64-bit)" build architecture to the version number:
-    let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-    let archResource = Services.appinfo.is64Bit
-                       ? "aboutDialog.architecture.sixtyFourBit"
-                       : "aboutDialog.architecture.thirtyTwoBit";
-    let arch = bundle.GetStringFromName(archResource);
-    version += ` (${arch})`;
-
-    document.getElementById("version").textContent = version;
-
-    // Show a release notes link if we have a URL.
-    let relNotesLink = document.getElementById("releasenotes");
-    let relNotesPrefType = Services.prefs.getPrefType("app.releaseNotesURL");
-    if (relNotesPrefType != Services.prefs.PREF_INVALID) {
-      let relNotesURL = Services.urlFormatter.formatURLPref("app.releaseNotesURL");
-      if (relNotesURL != "about:blank") {
-        relNotesLink.href = relNotesURL;
-        relNotesLink.hidden = false;
-      }
-    }
-
-    let distroId = Services.prefs.getCharPref("distribution.id", "");
-    if (distroId) {
-      let distroVersion = Services.prefs.getCharPref("distribution.version");
-
-      let distroIdField = document.getElementById("distributionId");
-      distroIdField.value = distroId + " - " + distroVersion;
-      distroIdField.hidden = false;
-
-      let distroAbout = Services.prefs.getStringPref("distribution.about", "");
-      if (distroAbout) {
-        let distroField = document.getElementById("distribution");
-        distroField.value = distroAbout;
-        distroField.hidden = false;
-      }
-    }
-
-    if (AppConstants.MOZ_UPDATER) {
-      gAppUpdater = new appUpdater();
-      let onUnload = () => {
-        window.removeEventListener("unload", onUnload);
-        Services.prefs.removeObserver("app.update.", this);
-      };
-      window.addEventListener("unload", onUnload);
-      Services.prefs.addObserver("app.update.", this);
-      this.updateReadPrefs();
-      setEventListener("updateRadioGroup", "command",
-                       gMainPane.updateWritePrefs);
-      setEventListener("showUpdateHistory", "command",
-                       gMainPane.showUpdates);
-    }
-
-    // Initilize Application section.
-    // Initialize shortcuts to some commonly accessed elements & values.
-    this._brandShortName =
-      document.getElementById("bundleBrand").getString("brandShortName");
-    this._prefsBundle = document.getElementById("bundlePreferences");
-    this._list = document.getElementById("handlersView");
-    this._filter = document.getElementById("filter");
-
-    // Observe preferences that influence what we display so we can rebuild
-    // the view when they change.
-    this._prefSvc.addObserver(PREF_SHOW_PLUGINS_IN_LIST, this);
-    this._prefSvc.addObserver(PREF_HIDE_PLUGINS_WITHOUT_EXTENSIONS, this);
-    this._prefSvc.addObserver(PREF_FEED_SELECTED_APP, this);
-    this._prefSvc.addObserver(PREF_FEED_SELECTED_WEB, this);
-    this._prefSvc.addObserver(PREF_FEED_SELECTED_ACTION, this);
-    this._prefSvc.addObserver(PREF_FEED_SELECTED_READER, this);
-
-    this._prefSvc.addObserver(PREF_VIDEO_FEED_SELECTED_APP, this);
-    this._prefSvc.addObserver(PREF_VIDEO_FEED_SELECTED_WEB, this);
-    this._prefSvc.addObserver(PREF_VIDEO_FEED_SELECTED_ACTION, this);
-    this._prefSvc.addObserver(PREF_VIDEO_FEED_SELECTED_READER, this);
-
-    this._prefSvc.addObserver(PREF_AUDIO_FEED_SELECTED_APP, this);
-    this._prefSvc.addObserver(PREF_AUDIO_FEED_SELECTED_WEB, this);
-    this._prefSvc.addObserver(PREF_AUDIO_FEED_SELECTED_ACTION, this);
-    this._prefSvc.addObserver(PREF_AUDIO_FEED_SELECTED_READER, this);
-
-    setEventListener("filter", "command", gMainPane.filter);
-    setEventListener("handlersView", "select",
-      gMainPane.onSelectionChanged);
-    setEventListener("typeColumn", "click", gMainPane.sort);
-    setEventListener("actionColumn", "click", gMainPane.sort);
-    setEventListener("chooseFolder", "command", gMainPane.chooseFolder);
-    setEventListener("browser.download.dir", "change", gMainPane.displayDownloadDirPref);
-    setEventListener("saveWhere", "command", gMainPane.handleSaveToCommand);
-
-    // Listen for window unload so we can remove our preference observers.
-    window.addEventListener("unload", this);
-
-    // Figure out how we should be sorting the list.  We persist sort settings
-    // across sessions, so we can't assume the default sort column/direction.
-    // XXX should we be using the XUL sort service instead?
-    if (document.getElementById("actionColumn").hasAttribute("sortDirection")) {
-      this._sortColumn = document.getElementById("actionColumn");
-      // The typeColumn element always has a sortDirection attribute,
-      // either because it was persisted or because the default value
-      // from the xul file was used.  If we are sorting on the other
-      // column, we should remove it.
-      document.getElementById("typeColumn").removeAttribute("sortDirection");
-    } else {
-      this._sortColumn = document.getElementById("typeColumn");
-    }
-
-    // Load the data and build the list of handlers.
-    // By doing this in a timeout, we let the preferences dialog resize itself
-    // to an appropriate size before we add a bunch of items to the list.
-    // Otherwise, if there are many items, and the Applications prefpane
-    // is the one that gets displayed when the user first opens the dialog,
-    // the dialog might stretch too much in an attempt to fit them all in.
-    // XXX Shouldn't we perhaps just set a max-height on the richlistbox?
-    var _delayedPaneLoad = function(self) {
-      self._loadData();
-      self._rebuildVisibleTypes();
-      self._sortVisibleTypes();
-      self._rebuildView();
-    }
-    setTimeout(_delayedPaneLoad, 0, this);
-
-    let browserBundle = document.getElementById("browserBundle");
-    appendSearchKeywords("browserContainersSettings", [
-      browserBundle.getString("userContextPersonal.label"),
-      browserBundle.getString("userContextWork.label"),
-      browserBundle.getString("userContextBanking.label"),
-      browserBundle.getString("userContextShopping.label"),
-    ]);
-
-    // Notify observers that the UI is now ready
-    Components.classes["@mozilla.org/observer-service;1"]
-              .getService(Components.interfaces.nsIObserverService)
-              .notifyObservers(window, "main-pane-loaded");
-  },
-
-  /**
-   * Show the Containers UI depending on the privacy.userContext.ui.enabled pref.
-   */
-  initBrowserContainers() {
-    if (!Services.prefs.getBoolPref("privacy.userContext.ui.enabled")) {
-      // The browserContainersGroup element has its own internal padding that
-      // is visible even if the browserContainersbox is visible, so hide the whole
-      // groupbox if the feature is disabled to prevent a gap in the preferences.
-      document.getElementById("browserContainersbox").setAttribute("data-hidden-from-search", "true");
-      return;
-    }
-
-    let link = document.getElementById("browserContainersLearnMore");
-    link.href = Services.urlFormatter.formatURLPref("app.support.baseURL") + "containers";
-
-    document.getElementById("browserContainersbox").hidden = false;
-
-    document.getElementById("browserContainersCheckbox").checked =
-      Services.prefs.getBoolPref("privacy.userContext.enabled");
-  },
-
-  isE10SEnabled() {
-    let e10sEnabled;
-    try {
-      let e10sStatus = Components.classes["@mozilla.org/supports-PRUint64;1"]
-                         .createInstance(Ci.nsISupportsPRUint64);
-      let appinfo = Services.appinfo.QueryInterface(Ci.nsIObserver);
-      appinfo.observe(e10sStatus, "getE10SBlocked", "");
-      e10sEnabled = e10sStatus.data < 2;
-    } catch (e) {
-      e10sEnabled = false;
-    }
-
-    return e10sEnabled;
-  },
-
-  enableE10SChange() {
-    if (AppConstants.E10S_TESTING_ONLY) {
-      let e10sCheckbox = document.getElementById("e10sAutoStart");
-      let e10sPref = document.getElementById("browser.tabs.remote.autostart");
-      let e10sTempPref = document.getElementById("e10sTempPref");
-
-      let prefsToChange;
-      if (e10sCheckbox.checked) {
-        // Enabling e10s autostart
-        prefsToChange = [e10sPref];
-      } else {
-        // Disabling e10s autostart
-        prefsToChange = [e10sPref];
-        if (e10sTempPref.value) {
-         prefsToChange.push(e10sTempPref);
-        }
-      }
-
-      let buttonIndex = confirmRestartPrompt(e10sCheckbox.checked, 0,
-                                             true, false);
-      if (buttonIndex == CONFIRM_RESTART_PROMPT_RESTART_NOW) {
-        for (let prefToChange of prefsToChange) {
-          prefToChange.value = e10sCheckbox.checked;
-        }
-
-        Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit | Ci.nsIAppStartup.eRestart);
-      }
-
-      // Revert the checkbox in case we didn't quit
-      e10sCheckbox.checked = e10sPref.value || e10sTempPref.value;
-    }
-  },
-
-  separateProfileModeChange() {
-    if (AppConstants.MOZ_DEV_EDITION) {
-      function quitApp() {
-        Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit | Ci.nsIAppStartup.eRestartNotSameProfile);
-      }
-      function revertCheckbox(error) {
-        separateProfileModeCheckbox.checked = !separateProfileModeCheckbox.checked;
-        if (error) {
-          Cu.reportError("Failed to toggle separate profile mode: " + error);
-        }
-      }
-      function createOrRemoveSpecialDevEditionFile(onSuccess) {
-        let uAppData = OS.Constants.Path.userApplicationDataDir;
-        let ignoreSeparateProfile = OS.Path.join(uAppData, "ignore-dev-edition-profile");
-
-        if (separateProfileModeCheckbox.checked) {
-          OS.File.remove(ignoreSeparateProfile).then(onSuccess, revertCheckbox);
-        } else {
-          OS.File.writeAtomic(ignoreSeparateProfile, new Uint8Array()).then(onSuccess, revertCheckbox);
-        }
-      }
-
-      let separateProfileModeCheckbox = document.getElementById("separateProfileMode");
-      let button_index = confirmRestartPrompt(separateProfileModeCheckbox.checked,
-                                              0, false, true);
-      switch (button_index) {
-        case CONFIRM_RESTART_PROMPT_CANCEL:
-          revertCheckbox();
-          return;
-        case CONFIRM_RESTART_PROMPT_RESTART_NOW:
-          const Cc = Components.classes, Ci = Components.interfaces;
-          let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"]
-                             .createInstance(Ci.nsISupportsPRBool);
-          Services.obs.notifyObservers(cancelQuit, "quit-application-requested",
-                                        "restart");
-          if (!cancelQuit.data) {
-            createOrRemoveSpecialDevEditionFile(quitApp);
-            return;
-          }
-
-          // Revert the checkbox in case we didn't quit
-          revertCheckbox();
-          return;
-        case CONFIRM_RESTART_PROMPT_RESTART_LATER:
-          createOrRemoveSpecialDevEditionFile();
-      }
-    }
-  },
-
-  onGetStarted(aEvent) {
-    if (AppConstants.MOZ_DEV_EDITION) {
-      const Cc = Components.classes, Ci = Components.interfaces;
-      let wm = Cc["@mozilla.org/appshell/window-mediator;1"]
-                  .getService(Ci.nsIWindowMediator);
-      let win = wm.getMostRecentWindow("navigator:browser");
-
-      fxAccounts.getSignedInUser().then(data => {
-        if (win) {
-          if (data) {
-            // We have a user, open Sync preferences in the same tab
-            win.openUILinkIn("about:preferences#sync", "current");
-            return;
-          }
-          let accountsTab = win.gBrowser.addTab("about:accounts?action=signin&entrypoint=dev-edition-setup");
-          win.gBrowser.selectedTab = accountsTab;
-        }
-      });
-    }
-  },
-
-  // HOME PAGE
-
-  /*
-   * Preferences:
-   *
-   * browser.startup.homepage
-   * - the user's home page, as a string; if the home page is a set of tabs,
-   *   this will be those URLs separated by the pipe character "|"
-   * browser.startup.page
-   * - what page(s) to show when the user starts the application, as an integer:
-   *
-   *     0: a blank page
-   *     1: the home page (as set by the browser.startup.homepage pref)
-   *     2: the last page the user visited (DEPRECATED)
-   *     3: windows and tabs from the last session (a.k.a. session restore)
-   *
-   *   The deprecated option is not exposed in UI; however, if the user has it
-   *   selected and doesn't change the UI for this preference, the deprecated
-   *   option is preserved.
-   */
-
-  syncFromHomePref() {
-    let homePref = document.getElementById("browser.startup.homepage");
-
-    // If the pref is set to about:home or about:newtab, set the value to ""
-    // to show the placeholder text (about:home title) rather than
-    // exposing those URLs to users.
-    let defaultBranch = Services.prefs.getDefaultBranch("");
-    let defaultValue = defaultBranch.getComplexValue("browser.startup.homepage",
-                                                     Ci.nsIPrefLocalizedString).data;
-    let currentValue = homePref.value.toLowerCase();
-    if (currentValue == "about:home" ||
-        (currentValue == defaultValue && currentValue == "about:newtab")) {
-      return "";
-    }
-
-    // If the pref is actually "", show about:blank.  The actual home page
-    // loading code treats them the same, and we don't want the placeholder text
-    // to be shown.
-    if (homePref.value == "")
-      return "about:blank";
-
-    // Otherwise, show the actual pref value.
-    return undefined;
-  },
-
-  syncToHomePref(value) {
-    // If the value is "", use about:home.
-    if (value == "")
-      return "about:home";
-
-    // Otherwise, use the actual textbox value.
-    return undefined;
-  },
-
-  /**
-   * Sets the home page to the current displayed page (or frontmost tab, if the
-   * most recent browser window contains multiple tabs), updating preference
-   * window UI to reflect this.
-   */
-  setHomePageToCurrent() {
-    let homePage = document.getElementById("browser.startup.homepage");
-    let tabs = this._getTabsForHomePage();
-    function getTabURI(t) {
-      return t.linkedBrowser.currentURI.spec;
-    }
-
-    // FIXME Bug 244192: using dangerous "|" joiner!
-    if (tabs.length)
-      homePage.value = tabs.map(getTabURI).join("|");
-  },
-
-  /**
-   * Displays a dialog in which the user can select a bookmark to use as home
-   * page.  If the user selects a bookmark, that bookmark's name is displayed in
-   * UI and the bookmark's address is stored to the home page preference.
-   */
-  setHomePageToBookmark() {
-    var rv = { urls: null, names: null };
-    gSubDialog.open("chrome://browser/content/preferences/selectBookmark.xul",
-                    "resizable=yes, modal=yes", rv,
-                    this._setHomePageToBookmarkClosed.bind(this, rv));
-  },
-
-  _setHomePageToBookmarkClosed(rv, aEvent) {
-    if (aEvent.detail.button != "accept")
-      return;
-    if (rv.urls && rv.names) {
-      var homePage = document.getElementById("browser.startup.homepage");
-
-      // XXX still using dangerous "|" joiner!
-      homePage.value = rv.urls.join("|");
-    }
-  },
-
-  /**
-   * Switches the "Use Current Page" button between its singular and plural
-   * forms.
-   */
-  _updateUseCurrentButton() {
-    let useCurrent = document.getElementById("useCurrent");
-
-
-    let tabs = this._getTabsForHomePage();
-
-    if (tabs.length > 1)
-      useCurrent.label = useCurrent.getAttribute("label2");
-    else
-      useCurrent.label = useCurrent.getAttribute("label1");
-
-    // In this case, the button's disabled state is set by preferences.xml.
-    let prefName = "pref.browser.homepage.disable_button.current_page";
-    if (document.getElementById(prefName).locked)
-      return;
-
-    useCurrent.disabled = !tabs.length
-  },
-
-  _getTabsForHomePage() {
-    var win;
-    var tabs = [];
-
-    const Cc = Components.classes, Ci = Components.interfaces;
-    var wm = Cc["@mozilla.org/appshell/window-mediator;1"]
-                .getService(Ci.nsIWindowMediator);
-    win = wm.getMostRecentWindow("navigator:browser");
-
-    if (win && win.document.documentElement
-                  .getAttribute("windowtype") == "navigator:browser") {
-      // We should only include visible & non-pinned tabs
-
-      tabs = win.gBrowser.visibleTabs.slice(win.gBrowser._numPinnedTabs);
-      tabs = tabs.filter(this.isNotAboutPreferences);
-    }
-
-    return tabs;
-  },
-
-  /**
-   * Check to see if a tab is not about:preferences
-   */
-  isNotAboutPreferences(aElement, aIndex, aArray) {
-    return !aElement.linkedBrowser.currentURI.spec.startsWith("about:preferences");
-  },
-
-  /**
-   * Restores the default home page as the user's home page.
-   */
-  restoreDefaultHomePage() {
-    var homePage = document.getElementById("browser.startup.homepage");
-    homePage.value = homePage.defaultValue;
-  },
-
-  /**
-   * Utility function to enable/disable the button specified by aButtonID based
-   * on the value of the Boolean preference specified by aPreferenceID.
-   */
-  updateButtons(aButtonID, aPreferenceID) {
-    var button = document.getElementById(aButtonID);
-    var preference = document.getElementById(aPreferenceID);
-    button.disabled = preference.value != true;
-    return undefined;
-  },
-
-  /**
-   * Hide/show the "Show my windows and tabs from last time" option based
-   * on the value of the browser.privatebrowsing.autostart pref.
-   */
-  updateBrowserStartupLastSession() {
-    let pbAutoStartPref = document.getElementById("browser.privatebrowsing.autostart");
-    let startupPref = document.getElementById("browser.startup.page");
-    let group = document.getElementById("browserStartupPage");
-    let option = document.getElementById("browserStartupLastSession");
-    if (pbAutoStartPref.value) {
-      option.setAttribute("disabled", "true");
-      if (option.selected) {
-        group.selectedItem = document.getElementById("browserStartupHomePage");
-      }
-    } else {
-      option.removeAttribute("disabled");
-      startupPref.updateElements(); // select the correct radio in the startup group
-    }
-  },
-
-  // TABS
-
-  /*
-   * Preferences:
-   *
-   * browser.link.open_newwindow - int
-   *   Determines where links targeting new windows should open.
-   *   Values:
-   *     1 - Open in the current window or tab.
-   *     2 - Open in a new window.
-   *     3 - Open in a new tab in the most recent window.
-   * browser.tabs.loadInBackground - bool
-   *   True - Whether browser should switch to a new tab opened from a link.
-   * browser.tabs.warnOnClose - bool
-   *   True - If when closing a window with multiple tabs the user is warned and
-   *          allowed to cancel the action, false to just close the window.
-   * browser.tabs.warnOnOpen - bool
-   *   True - Whether the user should be warned when trying to open a lot of
-   *          tabs at once (e.g. a large folder of bookmarks), allowing to
-   *          cancel the action.
-   * browser.taskbar.previews.enable - bool
-   *   True - Tabs are to be shown in Windows 7 taskbar.
-   *   False - Only the window is to be shown in Windows 7 taskbar.
-   */
-
-  /**
-   * Determines where a link which opens a new window will open.
-   *
-   * @returns |true| if such links should be opened in new tabs
-   */
-  readLinkTarget() {
-    var openNewWindow = document.getElementById("browser.link.open_newwindow");
-    return openNewWindow.value != 2;
-  },
-
-  /**
-   * Determines where a link which opens a new window will open.
-   *
-   * @returns 2 if such links should be opened in new windows,
-   *          3 if such links should be opened in new tabs
-   */
-  writeLinkTarget() {
-    var linkTargeting = document.getElementById("linkTargeting");
-    return linkTargeting.checked ? 3 : 2;
-  },
-  /*
-   * Preferences:
-   *
-   * browser.shell.checkDefault
-   * - true if a default-browser check (and prompt to make it so if necessary)
-   *   occurs at startup, false otherwise
-   */
-
-  /**
-   * Show button for setting browser as default browser or information that
-   * browser is already the default browser.
-   */
-  updateSetDefaultBrowser() {
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      let shellSvc = getShellService();
-      let defaultBrowserBox = document.getElementById("defaultBrowserBox");
-      if (!shellSvc) {
-        defaultBrowserBox.hidden = true;
-        return;
-      }
-      let setDefaultPane = document.getElementById("setDefaultPane");
-      let isDefault = shellSvc.isDefaultBrowser(false, true);
-      setDefaultPane.selectedIndex = isDefault ? 1 : 0;
-      let alwaysCheck = document.getElementById("alwaysCheckDefault");
-      alwaysCheck.disabled = alwaysCheck.disabled ||
-                             isDefault && alwaysCheck.checked;
-    }
-  },
-
-  /**
-   * Set browser as the operating system default browser.
-   */
-  setDefaultBrowser() {
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      let alwaysCheckPref = document.getElementById("browser.shell.checkDefaultBrowser");
-      alwaysCheckPref.value = true;
-
-      // Reset exponential backoff delay time in order to do visual update in pollForDefaultBrowser.
-      this._backoffIndex = 0;
-
-      let shellSvc = getShellService();
-      if (!shellSvc)
-        return;
-      try {
-        shellSvc.setDefaultBrowser(true, false);
-      } catch (ex) {
-        Cu.reportError(ex);
-        return;
-      }
-
-      let selectedIndex = shellSvc.isDefaultBrowser(false, true) ? 1 : 0;
-      document.getElementById("setDefaultPane").selectedIndex = selectedIndex;
-    }
-  },
-
-  /**
-   * Shows a dialog in which the preferred language for web content may be set.
-   */
-  showLanguages() {
-    gSubDialog.open("chrome://browser/content/preferences/languages.xul");
-  },
-
-  /**
-   * Displays the translation exceptions dialog where specific site and language
-   * translation preferences can be set.
-   */
-  showTranslationExceptions() {
-    gSubDialog.open("chrome://browser/content/preferences/translation.xul");
-  },
-
-  openTranslationProviderAttribution() {
-    Components.utils.import("resource:///modules/translation/Translation.jsm");
-    Translation.openProviderAttribution();
-  },
-
-  /**
-   * Displays the fonts dialog, where web page font names and sizes can be
-   * configured.
-   */
-  configureFonts() {
-    gSubDialog.open("chrome://browser/content/preferences/fonts.xul", "resizable=no");
-  },
-
-  /**
-   * Displays the colors dialog, where default web page/link/etc. colors can be
-   * configured.
-   */
-  configureColors() {
-    gSubDialog.open("chrome://browser/content/preferences/colors.xul", "resizable=no");
-  },
-
-  // NETWORK
-  /**
-   * Displays a dialog in which proxy settings may be changed.
-   */
-  showConnections() {
-    gSubDialog.open("chrome://browser/content/preferences/connection.xul");
-  },
-
-  checkBrowserContainers(event) {
-    let checkbox = document.getElementById("browserContainersCheckbox");
-    if (checkbox.checked) {
-      Services.prefs.setBoolPref("privacy.userContext.enabled", true);
-      return;
-    }
-
-    let count = ContextualIdentityService.countContainerTabs();
-    if (count == 0) {
-      Services.prefs.setBoolPref("privacy.userContext.enabled", false);
-      return;
-    }
-
-    let bundlePreferences = document.getElementById("bundlePreferences");
-
-    let title = bundlePreferences.getString("disableContainersAlertTitle");
-    let message = PluralForm.get(count, bundlePreferences.getString("disableContainersMsg"))
-                            .replace("#S", count)
-    let okButton = PluralForm.get(count, bundlePreferences.getString("disableContainersOkButton"))
-                             .replace("#S", count)
-    let cancelButton = bundlePreferences.getString("disableContainersButton2");
-
-    let buttonFlags = (Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_0) +
-                      (Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_1);
-
-    let rv = Services.prompt.confirmEx(window, title, message, buttonFlags,
-                                       okButton, cancelButton, null, null, {});
-    if (rv == 0) {
-      Services.prefs.setBoolPref("privacy.userContext.enabled", false);
-      return;
-    }
-
-    checkbox.checked = true;
-  },
-
-  /**
-   * Displays container panel for customising and adding containers.
-   */
-  showContainerSettings() {
-    gotoPref("containers");
-  },
-
-  /**
-   * ui.osk.enabled
-   * - when set to true, subject to other conditions, we may sometimes invoke
-   *   an on-screen keyboard when a text input is focused.
-   *   (Currently Windows-only, and depending on prefs, may be Windows-8-only)
-   */
-  updateOnScreenKeyboardVisibility() {
-    if (AppConstants.platform == "win") {
-      let minVersion = Services.prefs.getBoolPref("ui.osk.require_win10") ? 10 : 6.2;
-      if (Services.vc.compare(Services.sysinfo.getProperty("version"), minVersion) >= 0) {
-        document.getElementById("useOnScreenKeyboard").hidden = false;
-      }
-    }
-  },
-
-  updateHardwareAcceleration() {
-    // Placeholder for restart on change
-  },
-
-  // FONTS
-
-  /**
-   * Populates the default font list in UI.
-   */
-  _rebuildFonts() {
-    var preferences = document.getElementById("mainPreferences");
-    // Ensure preferences are "visible" to ensure bindings work.
-    preferences.hidden = false;
-    // Force flush:
-    preferences.clientHeight;
-    var langGroupPref = document.getElementById("font.language.group");
-    this._selectDefaultLanguageGroup(langGroupPref.value,
-                                     this._readDefaultFontTypeForLanguage(langGroupPref.value) == "serif");
-  },
-
-  /**
-   * Returns the type of the current default font for the language denoted by
-   * aLanguageGroup.
-   */
-  _readDefaultFontTypeForLanguage(aLanguageGroup) {
-    const kDefaultFontType = "font.default.%LANG%";
-    var defaultFontTypePref = kDefaultFontType.replace(/%LANG%/, aLanguageGroup);
-    var preference = document.getElementById(defaultFontTypePref);
-    if (!preference) {
-      preference = document.createElement("preference");
-      preference.id = defaultFontTypePref;
-      preference.setAttribute("name", defaultFontTypePref);
-      preference.setAttribute("type", "string");
-      preference.setAttribute("onchange", "gMainPane._rebuildFonts();");
-      document.getElementById("mainPreferences").appendChild(preference);
-    }
-    return preference.value;
-  },
-
-  _selectDefaultLanguageGroup(aLanguageGroup, aIsSerif) {
-    const kFontNameFmtSerif         = "font.name.serif.%LANG%";
-    const kFontNameFmtSansSerif     = "font.name.sans-serif.%LANG%";
-    const kFontNameListFmtSerif     = "font.name-list.serif.%LANG%";
-    const kFontNameListFmtSansSerif = "font.name-list.sans-serif.%LANG%";
-    const kFontSizeFmtVariable      = "font.size.variable.%LANG%";
-
-    var preferences = document.getElementById("mainPreferences");
-    var prefs = [{ format: aIsSerif ? kFontNameFmtSerif : kFontNameFmtSansSerif,
-                   type: "fontname",
-                   element: "defaultFont",
-                   fonttype: aIsSerif ? "serif" : "sans-serif" },
-                 { format: aIsSerif ? kFontNameListFmtSerif : kFontNameListFmtSansSerif,
-                   type: "unichar",
-                   element: null,
-                   fonttype: aIsSerif ? "serif" : "sans-serif" },
-                 { format: kFontSizeFmtVariable,
-                   type: "int",
-                   element: "defaultFontSize",
-                   fonttype: null }];
-    for (var i = 0; i < prefs.length; ++i) {
-      var preference = document.getElementById(prefs[i].format.replace(/%LANG%/, aLanguageGroup));
-      if (!preference) {
-        preference = document.createElement("preference");
-        var name = prefs[i].format.replace(/%LANG%/, aLanguageGroup);
-        preference.id = name;
-        preference.setAttribute("name", name);
-        preference.setAttribute("type", prefs[i].type);
-        preferences.appendChild(preference);
-      }
-
-      if (!prefs[i].element)
-        continue;
-
-      var element = document.getElementById(prefs[i].element);
-      if (element) {
-        element.setAttribute("preference", preference.id);
-
-        if (prefs[i].fonttype)
-          FontBuilder.buildFontList(aLanguageGroup, prefs[i].fonttype, element);
-
-        preference.setElementValue(element);
-      }
-    }
-  },
-
-  /**
-   * Stores the original value of the spellchecking preference to enable proper
-   * restoration if unchanged (since we're mapping a tristate onto a checkbox).
-   */
-  _storedSpellCheck: 0,
-
-  /**
-   * Returns true if any spellchecking is enabled and false otherwise, caching
-   * the current value to enable proper pref restoration if the checkbox is
-   * never changed.
-   *
-   * layout.spellcheckDefault
-   * - an integer:
-   *     0  disables spellchecking
-   *     1  enables spellchecking, but only for multiline text fields
-   *     2  enables spellchecking for all text fields
-   */
-  readCheckSpelling() {
-    var pref = document.getElementById("layout.spellcheckDefault");
-    this._storedSpellCheck = pref.value;
-
-    return (pref.value != 0);
-  },
-
-  /**
-   * Returns the value of the spellchecking preference represented by UI,
-   * preserving the preference's "hidden" value if the preference is
-   * unchanged and represents a value not strictly allowed in UI.
-   */
-  writeCheckSpelling() {
-    var checkbox = document.getElementById("checkSpelling");
-    if (checkbox.checked) {
-      if (this._storedSpellCheck == 2) {
-        return 2;
-      }
-      return 1;
-    }
-    return 0;
-  },
-
-  updateDefaultPerformanceSettingsPref() {
-    let defaultPerformancePref =
-      document.getElementById("browser.preferences.defaultPerformanceSettings.enabled");
-    let processCountPref = document.getElementById("dom.ipc.processCount");
-    let accelerationPref = document.getElementById("layers.acceleration.disabled");
-    if (processCountPref.value != processCountPref.defaultValue ||
-        accelerationPref.value != accelerationPref.defaultValue) {
-      defaultPerformancePref.value = false;
-    }
-  },
-
-  updatePerformanceSettingsBox({duringChangeEvent}) {
-    let defaultPerformancePref =
-      document.getElementById("browser.preferences.defaultPerformanceSettings.enabled");
-    let performanceSettings = document.getElementById("performanceSettings");
-    let processCountPref = document.getElementById("dom.ipc.processCount");
-    if (defaultPerformancePref.value) {
-      let accelerationPref = document.getElementById("layers.acceleration.disabled");
-      // Unset the value so process count will be decided by e10s rollout.
-      processCountPref.value = processCountPref.defaultValue;
-      accelerationPref.value = accelerationPref.defaultValue;
-      performanceSettings.hidden = true;
-    } else {
-      let e10sRolloutProcessCountPref =
-        document.getElementById("dom.ipc.processCount.web");
-      // Take the e10s rollout value as the default value (if it exists),
-      // but don't overwrite the user set value.
-      if (duringChangeEvent &&
-          e10sRolloutProcessCountPref.value &&
-          processCountPref.value == processCountPref.defaultValue) {
-        processCountPref.value = e10sRolloutProcessCountPref.value;
-      }
-      performanceSettings.hidden = false;
-    }
-  },
-
-  buildContentProcessCountMenuList() {
-    if (gMainPane.isE10SEnabled()) {
-      let processCountPref = document.getElementById("dom.ipc.processCount");
-      let e10sRolloutProcessCountPref =
-        document.getElementById("dom.ipc.processCount.web");
-      let defaultProcessCount =
-        e10sRolloutProcessCountPref.value || processCountPref.defaultValue;
-      let bundlePreferences = document.getElementById("bundlePreferences");
-      let label = bundlePreferences.getFormattedString("defaultContentProcessCount",
-        [defaultProcessCount]);
-      let contentProcessCount =
-        document.querySelector(`#contentProcessCount > menupopup >
-                                menuitem[value="${defaultProcessCount}"]`);
-      contentProcessCount.label = label;
-
-      document.getElementById("limitContentProcess").disabled = false;
-      document.getElementById("contentProcessCount").disabled = false;
-      document.getElementById("contentProcessCountEnabledDescription").hidden = false;
-      document.getElementById("contentProcessCountDisabledDescription").hidden = true;
-    } else {
-      document.getElementById("limitContentProcess").disabled = true;
-      document.getElementById("contentProcessCount").disabled = true;
-      document.getElementById("contentProcessCountEnabledDescription").hidden = true;
-      document.getElementById("contentProcessCountDisabledDescription").hidden = false;
-    }
-  },
-
-  /*
-   * Preferences:
-   *
-   * app.update.enabled
-   * - true if updates to the application are enabled, false otherwise
-   * app.update.auto
-   * - true if updates should be automatically downloaded and installed and
-   * false if the user should be asked what he wants to do when an update is
-   * available
-   * extensions.update.enabled
-   * - true if updates to extensions and themes are enabled, false otherwise
-   * browser.search.update
-   * - true if updates to search engines are enabled, false otherwise
-   */
-
-  /**
-   * Selects the item of the radiogroup based on the pref values and locked
-   * states.
-   *
-   * UI state matrix for update preference conditions
-   *
-   * UI Components:                              Preferences
-   * Radiogroup                                  i   = app.update.enabled
-   *                                             ii  = app.update.auto
-   *
-   * Disabled states:
-   * Element           pref  value  locked  disabled
-   * radiogroup        i     t/f    f       false
-   *                   i     t/f    *t*     *true*
-   *                   ii    t/f    f       false
-   *                   ii    t/f    *t*     *true*
-   */
-  updateReadPrefs() {
-    if (AppConstants.MOZ_UPDATER) {
-      var enabledPref = document.getElementById("app.update.enabled");
-      var autoPref = document.getElementById("app.update.auto");
-      var radiogroup = document.getElementById("updateRadioGroup");
-
-      if (!enabledPref.value)   // Don't care for autoPref.value in this case.
-        radiogroup.value = "manual";    // 3. Never check for updates.
-      else if (autoPref.value)  // enabledPref.value && autoPref.value
-        radiogroup.value = "auto";      // 1. Automatically install updates
-      else                      // enabledPref.value && !autoPref.value
-        radiogroup.value = "checkOnly"; // 2. Check, but let me choose
-
-      var canCheck = Components.classes["@mozilla.org/updates/update-service;1"].
-                       getService(Components.interfaces.nsIApplicationUpdateService).
-                       canCheckForUpdates;
-      // canCheck is false if the enabledPref is false and locked,
-      // or the binary platform or OS version is not known.
-      // A locked pref is sufficient to disable the radiogroup.
-      radiogroup.disabled = !canCheck || enabledPref.locked || autoPref.locked;
-
-      if (AppConstants.MOZ_MAINTENANCE_SERVICE) {
-        // Check to see if the maintenance service is installed.
-        // If it is don't show the preference at all.
-        var installed;
-        try {
-          var wrk = Components.classes["@mozilla.org/windows-registry-key;1"]
-                    .createInstance(Components.interfaces.nsIWindowsRegKey);
-          wrk.open(wrk.ROOT_KEY_LOCAL_MACHINE,
-                   "SOFTWARE\\Mozilla\\MaintenanceService",
-                   wrk.ACCESS_READ | wrk.WOW64_64);
-          installed = wrk.readIntValue("Installed");
-          wrk.close();
-        } catch (e) {
-        }
-        if (installed != 1) {
-          document.getElementById("useService").hidden = true;
-        }
-      }
-    }
-  },
-
-  /**
-   * Sets the pref values based on the selected item of the radiogroup.
-   */
-  updateWritePrefs() {
-    if (AppConstants.MOZ_UPDATER) {
-      var enabledPref = document.getElementById("app.update.enabled");
-      var autoPref = document.getElementById("app.update.auto");
-      var radiogroup = document.getElementById("updateRadioGroup");
-      switch (radiogroup.value) {
-        case "auto":      // 1. Automatically install updates for Desktop only
-          enabledPref.value = true;
-          autoPref.value = true;
-          break;
-        case "checkOnly": // 2. Check, but let me choose
-          enabledPref.value = true;
-          autoPref.value = false;
-          break;
-        case "manual":    // 3. Never check for updates.
-          enabledPref.value = false;
-          autoPref.value = false;
-      }
-    }
-  },
-
-  /**
-   * Displays the history of installed updates.
-   */
-  showUpdates() {
-    gSubDialog.open("chrome://mozapps/content/update/history.xul");
-  },
-
-  destroy() {
-    window.removeEventListener("unload", this);
-    this._prefSvc.removeObserver(PREF_SHOW_PLUGINS_IN_LIST, this);
-    this._prefSvc.removeObserver(PREF_HIDE_PLUGINS_WITHOUT_EXTENSIONS, this);
-    this._prefSvc.removeObserver(PREF_FEED_SELECTED_APP, this);
-    this._prefSvc.removeObserver(PREF_FEED_SELECTED_WEB, this);
-    this._prefSvc.removeObserver(PREF_FEED_SELECTED_ACTION, this);
-    this._prefSvc.removeObserver(PREF_FEED_SELECTED_READER, this);
-
-    this._prefSvc.removeObserver(PREF_VIDEO_FEED_SELECTED_APP, this);
-    this._prefSvc.removeObserver(PREF_VIDEO_FEED_SELECTED_WEB, this);
-    this._prefSvc.removeObserver(PREF_VIDEO_FEED_SELECTED_ACTION, this);
-    this._prefSvc.removeObserver(PREF_VIDEO_FEED_SELECTED_READER, this);
-
-    this._prefSvc.removeObserver(PREF_AUDIO_FEED_SELECTED_APP, this);
-    this._prefSvc.removeObserver(PREF_AUDIO_FEED_SELECTED_WEB, this);
-    this._prefSvc.removeObserver(PREF_AUDIO_FEED_SELECTED_ACTION, this);
-    this._prefSvc.removeObserver(PREF_AUDIO_FEED_SELECTED_READER, this);
-  },
-
-
-  // nsISupports
-
-  QueryInterface(aIID) {
-    if (aIID.equals(Ci.nsIObserver) ||
-        aIID.equals(Ci.nsIDOMEventListener ||
-        aIID.equals(Ci.nsISupports)))
-      return this;
-
-    throw Cr.NS_ERROR_NO_INTERFACE;
-  },
-
-
-  // nsIObserver
-
-  observe(aSubject, aTopic, aData) {
-    if (aTopic == "nsPref:changed") {
-      // Rebuild the list when there are changes to preferences that influence
-      // whether or not to show certain entries in the list.
-      if (!this._storingAction) {
-        // These two prefs alter the list of visible types, so we have to rebuild
-        // that list when they change.
-        if (aData == PREF_SHOW_PLUGINS_IN_LIST ||
-            aData == PREF_HIDE_PLUGINS_WITHOUT_EXTENSIONS) {
-          this._rebuildVisibleTypes();
-          this._sortVisibleTypes();
-        }
-
-        // All the prefs we observe can affect what we display, so we rebuild
-        // the view when any of them changes.
-        this._rebuildView();
-      }
-      if (AppConstants.MOZ_UPDATER) {
-        this.updateReadPrefs();
-      }
-    }
-  },
-
-
-  // nsIDOMEventListener
-
-  handleEvent(aEvent) {
-    if (aEvent.type == "unload") {
-      this.destroy();
-    }
-  },
-
-
-  // Composed Model Construction
-
-  _loadData() {
-    this._loadFeedHandler();
-    this._loadInternalHandlers();
-    this._loadPluginHandlers();
-    this._loadApplicationHandlers();
-  },
-
-  _loadFeedHandler() {
-    this._handledTypes[TYPE_MAYBE_FEED] = feedHandlerInfo;
-    feedHandlerInfo.handledOnlyByPlugin = false;
-
-    this._handledTypes[TYPE_MAYBE_VIDEO_FEED] = videoFeedHandlerInfo;
-    videoFeedHandlerInfo.handledOnlyByPlugin = false;
-
-    this._handledTypes[TYPE_MAYBE_AUDIO_FEED] = audioFeedHandlerInfo;
-    audioFeedHandlerInfo.handledOnlyByPlugin = false;
-  },
-
-  /**
-   * Load higher level internal handlers so they can be turned on/off in the
-   * applications menu.
-   */
-  _loadInternalHandlers() {
-    var internalHandlers = [pdfHandlerInfo];
-    for (let internalHandler of internalHandlers) {
-      if (internalHandler.enabled) {
-        this._handledTypes[internalHandler.type] = internalHandler;
-      }
-    }
-  },
-
-  /**
-   * Load the set of handlers defined by plugins.
-   *
-   * Note: if there's more than one plugin for a given MIME type, we assume
-   * the last one is the one that the application will use.  That may not be
-   * correct, but it's how we've been doing it for years.
-   *
-   * Perhaps we should instead query navigator.mimeTypes for the set of types
-   * supported by the application and then get the plugin from each MIME type's
-   * enabledPlugin property.  But if there's a plugin for a type, we need
-   * to know about it even if it isn't enabled, since we're going to give
-   * the user an option to enable it.
-   *
-   * Also note that enabledPlugin does not get updated when
-   * plugin.disable_full_page_plugin_for_types changes, so even if we could use
-   * enabledPlugin to get the plugin that would be used, we'd still need to
-   * check the pref ourselves to find out if it's enabled.
-   */
-  _loadPluginHandlers() {
-    "use strict";
-
-    let mimeTypes = navigator.mimeTypes;
-
-    for (let mimeType of mimeTypes) {
-      let handlerInfoWrapper;
-      if (mimeType.type in this._handledTypes) {
-        handlerInfoWrapper = this._handledTypes[mimeType.type];
-      } else {
-        let wrappedHandlerInfo =
-              this._mimeSvc.getFromTypeAndExtension(mimeType.type, null);
-        handlerInfoWrapper = new HandlerInfoWrapper(mimeType.type, wrappedHandlerInfo);
-        handlerInfoWrapper.handledOnlyByPlugin = true;
-        this._handledTypes[mimeType.type] = handlerInfoWrapper;
-      }
-      handlerInfoWrapper.pluginName = mimeType.enabledPlugin.name;
-    }
-  },
-
-  /**
-   * Load the set of handlers defined by the application datastore.
-   */
-  _loadApplicationHandlers() {
-    var wrappedHandlerInfos = this._handlerSvc.enumerate();
-    while (wrappedHandlerInfos.hasMoreElements()) {
-      let wrappedHandlerInfo =
-        wrappedHandlerInfos.getNext().QueryInterface(Ci.nsIHandlerInfo);
-      let type = wrappedHandlerInfo.type;
-
-      let handlerInfoWrapper;
-      if (type in this._handledTypes)
-        handlerInfoWrapper = this._handledTypes[type];
-      else {
-        handlerInfoWrapper = new HandlerInfoWrapper(type, wrappedHandlerInfo);
-        this._handledTypes[type] = handlerInfoWrapper;
-      }
-
-      handlerInfoWrapper.handledOnlyByPlugin = false;
-    }
-  },
-
-
-  // View Construction
-
-  _rebuildVisibleTypes() {
-    // Reset the list of visible types and the visible type description counts.
-    this._visibleTypes = [];
-    this._visibleTypeDescriptionCount = {};
-
-    // Get the preferences that help determine what types to show.
-    var showPlugins = this._prefSvc.getBoolPref(PREF_SHOW_PLUGINS_IN_LIST);
-    var hidePluginsWithoutExtensions =
-      this._prefSvc.getBoolPref(PREF_HIDE_PLUGINS_WITHOUT_EXTENSIONS);
-
-    for (let type in this._handledTypes) {
-      let handlerInfo = this._handledTypes[type];
-
-      // Hide plugins without associated extensions if so prefed so we don't
-      // show a whole bunch of obscure types handled by plugins on Mac.
-      // Note: though protocol types don't have extensions, we still show them;
-      // the pref is only meant to be applied to MIME types, since plugins are
-      // only associated with MIME types.
-      // FIXME: should we also check the "suffixes" property of the plugin?
-      // Filed as bug 395135.
-      if (hidePluginsWithoutExtensions && handlerInfo.handledOnlyByPlugin &&
-          handlerInfo.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo &&
-          !handlerInfo.primaryExtension)
-        continue;
-
-      // Hide types handled only by plugins if so prefed.
-      if (handlerInfo.handledOnlyByPlugin && !showPlugins)
-        continue;
-
-      // We couldn't find any reason to exclude the type, so include it.
-      this._visibleTypes.push(handlerInfo);
-
-      if (handlerInfo.description in this._visibleTypeDescriptionCount)
-        this._visibleTypeDescriptionCount[handlerInfo.description]++;
-      else
-        this._visibleTypeDescriptionCount[handlerInfo.description] = 1;
-    }
-  },
-
-  _rebuildView() {
-    // Clear the list of entries.
-    while (this._list.childNodes.length > 1)
-      this._list.removeChild(this._list.lastChild);
-
-    var visibleTypes = this._visibleTypes;
-
-    // If the user is filtering the list, then only show matching types.
-    if (this._filter.value)
-      visibleTypes = visibleTypes.filter(this._matchesFilter, this);
-
-    for (let visibleType of visibleTypes) {
-      let item = document.createElement("richlistitem");
-      item.setAttribute("type", visibleType.type);
-      item.setAttribute("typeDescription", this._describeType(visibleType));
-      if (visibleType.smallIcon)
-        item.setAttribute("typeIcon", visibleType.smallIcon);
-      item.setAttribute("actionDescription",
-                        this._describePreferredAction(visibleType));
-
-      if (!this._setIconClassForPreferredAction(visibleType, item)) {
-        item.setAttribute("actionIcon",
-                          this._getIconURLForPreferredAction(visibleType));
-      }
-
-      this._list.appendChild(item);
-    }
-
-    this._selectLastSelectedType();
-  },
-
-  _matchesFilter(aType) {
-    var filterValue = this._filter.value.toLowerCase();
-    return this._describeType(aType).toLowerCase().indexOf(filterValue) != -1 ||
-           this._describePreferredAction(aType).toLowerCase().indexOf(filterValue) != -1;
-  },
-
-  /**
-   * Describe, in a human-readable fashion, the type represented by the given
-   * handler info object.  Normally this is just the description provided by
-   * the info object, but if more than one object presents the same description,
-   * then we annotate the duplicate descriptions with the type itself to help
-   * users distinguish between those types.
-   *
-   * @param aHandlerInfo {nsIHandlerInfo} the type being described
-   * @returns {string} a description of the type
-   */
-  _describeType(aHandlerInfo) {
-    if (this._visibleTypeDescriptionCount[aHandlerInfo.description] > 1)
-      return this._prefsBundle.getFormattedString("typeDescriptionWithType",
-                                                  [aHandlerInfo.description,
-                                                   aHandlerInfo.type]);
-
-    return aHandlerInfo.description;
-  },
-
-  /**
-   * Describe, in a human-readable fashion, the preferred action to take on
-   * the type represented by the given handler info object.
-   *
-   * XXX Should this be part of the HandlerInfoWrapper interface?  It would
-   * violate the separation of model and view, but it might make more sense
-   * nonetheless (f.e. it would make sortTypes easier).
-   *
-   * @param aHandlerInfo {nsIHandlerInfo} the type whose preferred action
-   *                                      is being described
-   * @returns {string} a description of the action
-   */
-  _describePreferredAction(aHandlerInfo) {
-    // alwaysAskBeforeHandling overrides the preferred action, so if that flag
-    // is set, then describe that behavior instead.  For most types, this is
-    // the "alwaysAsk" string, but for the feed type we show something special.
-    if (aHandlerInfo.alwaysAskBeforeHandling) {
-      if (isFeedType(aHandlerInfo.type))
-        return this._prefsBundle.getFormattedString("previewInApp",
-                                                    [this._brandShortName]);
-      return this._prefsBundle.getString("alwaysAsk");
-    }
-
-    switch (aHandlerInfo.preferredAction) {
-      case Ci.nsIHandlerInfo.saveToDisk:
-        return this._prefsBundle.getString("saveFile");
-
-      case Ci.nsIHandlerInfo.useHelperApp:
-        var preferredApp = aHandlerInfo.preferredApplicationHandler;
-        var name;
-        if (preferredApp instanceof Ci.nsILocalHandlerApp)
-          name = getFileDisplayName(preferredApp.executable);
-        else
-          name = preferredApp.name;
-        return this._prefsBundle.getFormattedString("useApp", [name]);
-
-      case Ci.nsIHandlerInfo.handleInternally:
-        // For the feed type, handleInternally means live bookmarks.
-        if (isFeedType(aHandlerInfo.type)) {
-          return this._prefsBundle.getFormattedString("addLiveBookmarksInApp",
-                                                      [this._brandShortName]);
-        }
-
-        if (aHandlerInfo instanceof InternalHandlerInfoWrapper) {
-          return this._prefsBundle.getFormattedString("previewInApp",
-                                                      [this._brandShortName]);
-        }
-
-        // For other types, handleInternally looks like either useHelperApp
-        // or useSystemDefault depending on whether or not there's a preferred
-        // handler app.
-        if (this.isValidHandlerApp(aHandlerInfo.preferredApplicationHandler))
-          return aHandlerInfo.preferredApplicationHandler.name;
-
-        return aHandlerInfo.defaultDescription;
-
-        // XXX Why don't we say the app will handle the type internally?
-        // Is it because the app can't actually do that?  But if that's true,
-        // then why would a preferredAction ever get set to this value
-        // in the first place?
-
-      case Ci.nsIHandlerInfo.useSystemDefault:
-        return this._prefsBundle.getFormattedString("useDefault",
-                                                    [aHandlerInfo.defaultDescription]);
-
-      case kActionUsePlugin:
-        return this._prefsBundle.getFormattedString("usePluginIn",
-                                                    [aHandlerInfo.pluginName,
-                                                     this._brandShortName]);
-      default:
-        throw new Error(`Unexpected preferredAction: ${aHandlerInfo.preferredAction}`);
-    }
-  },
-
-  _selectLastSelectedType() {
-    // If the list is disabled by the pref.downloads.disable_button.edit_actions
-    // preference being locked, then don't select the type, as that would cause
-    // it to appear selected, with a different background and an actions menu
-    // that makes it seem like you can choose an action for the type.
-    if (this._list.disabled)
-      return;
-
-    var lastSelectedType = this._list.getAttribute("lastSelectedType");
-    if (!lastSelectedType)
-      return;
-
-    var item = this._list.getElementsByAttribute("type", lastSelectedType)[0];
-    if (!item)
-      return;
-
-    this._list.selectedItem = item;
-  },
-
-  /**
-   * Whether or not the given handler app is valid.
-   *
-   * @param aHandlerApp {nsIHandlerApp} the handler app in question
-   *
-   * @returns {boolean} whether or not it's valid
-   */
-  isValidHandlerApp(aHandlerApp) {
-    if (!aHandlerApp)
-      return false;
-
-    if (aHandlerApp instanceof Ci.nsILocalHandlerApp)
-      return this._isValidHandlerExecutable(aHandlerApp.executable);
-
-    if (aHandlerApp instanceof Ci.nsIWebHandlerApp)
-      return aHandlerApp.uriTemplate;
-
-    if (aHandlerApp instanceof Ci.nsIWebContentHandlerInfo)
-      return aHandlerApp.uri;
-
-    return false;
-  },
-
-  _isValidHandlerExecutable(aExecutable) {
-    let leafName;
-    if (AppConstants.platform == "win") {
-      leafName = `${AppConstants.MOZ_APP_NAME}.exe`;
-    } else if (AppConstants.platform == "macosx") {
-      leafName = AppConstants.MOZ_MACBUNDLE_NAME;
-    } else {
-      leafName = `${AppConstants.MOZ_APP_NAME}-bin`;
-    }
-    return aExecutable &&
-           aExecutable.exists() &&
-           aExecutable.isExecutable() &&
-// XXXben - we need to compare this with the running instance executable
-//          just don't know how to do that via script...
-// XXXmano TBD: can probably add this to nsIShellService
-           aExecutable.leafName != leafName;
-  },
-
-  /**
-   * Rebuild the actions menu for the selected entry.  Gets called by
-   * the richlistitem constructor when an entry in the list gets selected.
-   */
-  rebuildActionsMenu() {
-    var typeItem = this._list.selectedItem;
-    var handlerInfo = this._handledTypes[typeItem.type];
-    var menu =
-      document.getAnonymousElementByAttribute(typeItem, "class", "actionsMenu");
-    var menuPopup = menu.menupopup;
-
-    // Clear out existing items.
-    while (menuPopup.hasChildNodes())
-      menuPopup.removeChild(menuPopup.lastChild);
-
-    let internalMenuItem;
-    // Add the "Preview in Firefox" option for optional internal handlers.
-    if (handlerInfo instanceof InternalHandlerInfoWrapper) {
-      internalMenuItem = document.createElement("menuitem");
-      internalMenuItem.setAttribute("action", Ci.nsIHandlerInfo.handleInternally);
-      let label = this._prefsBundle.getFormattedString("previewInApp",
-                                                       [this._brandShortName]);
-      internalMenuItem.setAttribute("label", label);
-      internalMenuItem.setAttribute("tooltiptext", label);
-      internalMenuItem.setAttribute(APP_ICON_ATTR_NAME, "ask");
-      menuPopup.appendChild(internalMenuItem);
-    }
-
-    {
-      var askMenuItem = document.createElement("menuitem");
-      askMenuItem.setAttribute("action", Ci.nsIHandlerInfo.alwaysAsk);
-      let label;
-      if (isFeedType(handlerInfo.type))
-        label = this._prefsBundle.getFormattedString("previewInApp",
-                                                     [this._brandShortName]);
-      else
-        label = this._prefsBundle.getString("alwaysAsk");
-      askMenuItem.setAttribute("label", label);
-      askMenuItem.setAttribute("tooltiptext", label);
-      askMenuItem.setAttribute(APP_ICON_ATTR_NAME, "ask");
-      menuPopup.appendChild(askMenuItem);
-    }
-
-    // Create a menu item for saving to disk.
-    // Note: this option isn't available to protocol types, since we don't know
-    // what it means to save a URL having a certain scheme to disk, nor is it
-    // available to feeds, since the feed code doesn't implement the capability.
-    if ((handlerInfo.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo) &&
-        !isFeedType(handlerInfo.type)) {
-      var saveMenuItem = document.createElement("menuitem");
-      saveMenuItem.setAttribute("action", Ci.nsIHandlerInfo.saveToDisk);
-      let label = this._prefsBundle.getString("saveFile");
-      saveMenuItem.setAttribute("label", label);
-      saveMenuItem.setAttribute("tooltiptext", label);
-      saveMenuItem.setAttribute(APP_ICON_ATTR_NAME, "save");
-      menuPopup.appendChild(saveMenuItem);
-    }
-
-    // If this is the feed type, add a Live Bookmarks item.
-    if (isFeedType(handlerInfo.type)) {
-      internalMenuItem = document.createElement("menuitem");
-      internalMenuItem.setAttribute("action", Ci.nsIHandlerInfo.handleInternally);
-      let label = this._prefsBundle.getFormattedString("addLiveBookmarksInApp",
-                                                       [this._brandShortName]);
-      internalMenuItem.setAttribute("label", label);
-      internalMenuItem.setAttribute("tooltiptext", label);
-      internalMenuItem.setAttribute(APP_ICON_ATTR_NAME, "feed");
-      menuPopup.appendChild(internalMenuItem);
-    }
-
-    // Add a separator to distinguish these items from the helper app items
-    // that follow them.
-    let menuseparator = document.createElement("menuseparator");
-    menuPopup.appendChild(menuseparator);
-
-    // Create a menu item for the OS default application, if any.
-    if (handlerInfo.hasDefaultHandler) {
-      var defaultMenuItem = document.createElement("menuitem");
-      defaultMenuItem.setAttribute("action", Ci.nsIHandlerInfo.useSystemDefault);
-      let label = this._prefsBundle.getFormattedString("useDefault",
-                                                       [handlerInfo.defaultDescription]);
-      defaultMenuItem.setAttribute("label", label);
-      defaultMenuItem.setAttribute("tooltiptext", handlerInfo.defaultDescription);
-      defaultMenuItem.setAttribute("image", this._getIconURLForSystemDefault(handlerInfo));
-
-      menuPopup.appendChild(defaultMenuItem);
-    }
-
-    // Create menu items for possible handlers.
-    let preferredApp = handlerInfo.preferredApplicationHandler;
-    let possibleApps = handlerInfo.possibleApplicationHandlers.enumerate();
-    var possibleAppMenuItems = [];
-    while (possibleApps.hasMoreElements()) {
-      let possibleApp = possibleApps.getNext();
-      if (!this.isValidHandlerApp(possibleApp))
-        continue;
-
-      let menuItem = document.createElement("menuitem");
-      menuItem.setAttribute("action", Ci.nsIHandlerInfo.useHelperApp);
-      let label;
-      if (possibleApp instanceof Ci.nsILocalHandlerApp)
-        label = getFileDisplayName(possibleApp.executable);
-      else
-        label = possibleApp.name;
-      label = this._prefsBundle.getFormattedString("useApp", [label]);
-      menuItem.setAttribute("label", label);
-      menuItem.setAttribute("tooltiptext", label);
-      menuItem.setAttribute("image", this._getIconURLForHandlerApp(possibleApp));
-
-      // Attach the handler app object to the menu item so we can use it
-      // to make changes to the datastore when the user selects the item.
-      menuItem.handlerApp = possibleApp;
-
-      menuPopup.appendChild(menuItem);
-      possibleAppMenuItems.push(menuItem);
-    }
-
-    // Create a menu item for the plugin.
-    if (handlerInfo.pluginName) {
-      var pluginMenuItem = document.createElement("menuitem");
-      pluginMenuItem.setAttribute("action", kActionUsePlugin);
-      let label = this._prefsBundle.getFormattedString("usePluginIn",
-                                                       [handlerInfo.pluginName,
-                                                        this._brandShortName]);
-      pluginMenuItem.setAttribute("label", label);
-      pluginMenuItem.setAttribute("tooltiptext", label);
-      pluginMenuItem.setAttribute(APP_ICON_ATTR_NAME, "plugin");
-      menuPopup.appendChild(pluginMenuItem);
-    }
-
-    // Create a menu item for selecting a local application.
-    let canOpenWithOtherApp = true;
-    if (AppConstants.platform == "win") {
-      // On Windows, selecting an application to open another application
-      // would be meaningless so we special case executables.
-      let executableType = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService)
-                                                    .getTypeFromExtension("exe");
-      canOpenWithOtherApp = handlerInfo.type != executableType;
-    }
-    if (canOpenWithOtherApp) {
-      let menuItem = document.createElement("menuitem");
-      menuItem.className = "choose-app-item";
-      menuItem.addEventListener("command", function(e) {
-        gMainPane.chooseApp(e);
-      });
-      let label = this._prefsBundle.getString("useOtherApp");
-      menuItem.setAttribute("label", label);
-      menuItem.setAttribute("tooltiptext", label);
-      menuPopup.appendChild(menuItem);
-    }
-
-    // Create a menu item for managing applications.
-    if (possibleAppMenuItems.length) {
-      let menuItem = document.createElement("menuseparator");
-      menuPopup.appendChild(menuItem);
-      menuItem = document.createElement("menuitem");
-      menuItem.className = "manage-app-item";
-      menuItem.addEventListener("command", function(e) {
-        gMainPane.manageApp(e);
-      });
-      menuItem.setAttribute("label", this._prefsBundle.getString("manageApp"));
-      menuPopup.appendChild(menuItem);
-    }
-
-    // Select the item corresponding to the preferred action.  If the always
-    // ask flag is set, it overrides the preferred action.  Otherwise we pick
-    // the item identified by the preferred action (when the preferred action
-    // is to use a helper app, we have to pick the specific helper app item).
-    if (handlerInfo.alwaysAskBeforeHandling)
-      menu.selectedItem = askMenuItem;
-    else switch (handlerInfo.preferredAction) {
-      case Ci.nsIHandlerInfo.handleInternally:
-        if (internalMenuItem) {
-          menu.selectedItem = internalMenuItem;
-        } else {
-          Cu.reportError("No menu item defined to set!")
-        }
-        break;
-      case Ci.nsIHandlerInfo.useSystemDefault:
-        menu.selectedItem = defaultMenuItem;
-        break;
-      case Ci.nsIHandlerInfo.useHelperApp:
-        if (preferredApp)
-          menu.selectedItem =
-            possibleAppMenuItems.filter(v => v.handlerApp.equals(preferredApp))[0];
-        break;
-      case kActionUsePlugin:
-        menu.selectedItem = pluginMenuItem;
-        break;
-      case Ci.nsIHandlerInfo.saveToDisk:
-        menu.selectedItem = saveMenuItem;
-        break;
-    }
-  },
-
-
-  // Sorting & Filtering
-
-  _sortColumn: null,
-
-  /**
-   * Sort the list when the user clicks on a column header.
-   */
-  sort(event) {
-    var column = event.target;
-
-    // If the user clicked on a new sort column, remove the direction indicator
-    // from the old column.
-    if (this._sortColumn && this._sortColumn != column)
-      this._sortColumn.removeAttribute("sortDirection");
-
-    this._sortColumn = column;
-
-    // Set (or switch) the sort direction indicator.
-    if (column.getAttribute("sortDirection") == "ascending")
-      column.setAttribute("sortDirection", "descending");
-    else
-      column.setAttribute("sortDirection", "ascending");
-
-    this._sortVisibleTypes();
-    this._rebuildView();
-  },
-
-  /**
-   * Sort the list of visible types by the current sort column/direction.
-   */
-  _sortVisibleTypes() {
-    if (!this._sortColumn)
-      return;
-
-    var t = this;
-
-    function sortByType(a, b) {
-      return t._describeType(a).toLowerCase().
-             localeCompare(t._describeType(b).toLowerCase());
-    }
-
-    function sortByAction(a, b) {
-      return t._describePreferredAction(a).toLowerCase().
-             localeCompare(t._describePreferredAction(b).toLowerCase());
-    }
-
-    switch (this._sortColumn.getAttribute("value")) {
-      case "type":
-        this._visibleTypes.sort(sortByType);
-        break;
-      case "action":
-        this._visibleTypes.sort(sortByAction);
-        break;
-    }
-
-    if (this._sortColumn.getAttribute("sortDirection") == "descending")
-      this._visibleTypes.reverse();
-  },
-
-  /**
-   * Filter the list when the user enters a filter term into the filter field.
-   */
-  filter() {
-    this._rebuildView();
-  },
-
-  focusFilterBox() {
-    this._filter.focus();
-    this._filter.select();
-  },
-
-
-  // Changes
-
-  onSelectAction(aActionItem) {
-    this._storingAction = true;
-
-    try {
-      this._storeAction(aActionItem);
-    } finally {
-      this._storingAction = false;
-    }
-  },
-
-  _storeAction(aActionItem) {
-    var typeItem = this._list.selectedItem;
-    var handlerInfo = this._handledTypes[typeItem.type];
-
-    let action = parseInt(aActionItem.getAttribute("action"));
-
-    // Set the plugin state if we're enabling or disabling a plugin.
-    if (action == kActionUsePlugin)
-      handlerInfo.enablePluginType();
-    else if (handlerInfo.pluginName && !handlerInfo.isDisabledPluginType)
-      handlerInfo.disablePluginType();
-
-    // Set the preferred application handler.
-    // We leave the existing preferred app in the list when we set
-    // the preferred action to something other than useHelperApp so that
-    // legacy datastores that don't have the preferred app in the list
-    // of possible apps still include the preferred app in the list of apps
-    // the user can choose to handle the type.
-    if (action == Ci.nsIHandlerInfo.useHelperApp)
-      handlerInfo.preferredApplicationHandler = aActionItem.handlerApp;
-
-    // Set the "always ask" flag.
-    if (action == Ci.nsIHandlerInfo.alwaysAsk)
-      handlerInfo.alwaysAskBeforeHandling = true;
-    else
-      handlerInfo.alwaysAskBeforeHandling = false;
-
-    // Set the preferred action.
-    handlerInfo.preferredAction = action;
-
-    handlerInfo.store();
-
-    // Make sure the handler info object is flagged to indicate that there is
-    // now some user configuration for the type.
-    handlerInfo.handledOnlyByPlugin = false;
-
-    // Update the action label and image to reflect the new preferred action.
-    typeItem.setAttribute("actionDescription",
-                          this._describePreferredAction(handlerInfo));
-    if (!this._setIconClassForPreferredAction(handlerInfo, typeItem)) {
-      typeItem.setAttribute("actionIcon",
-                            this._getIconURLForPreferredAction(handlerInfo));
-    }
-  },
-
-  manageApp(aEvent) {
-    // Don't let the normal "on select action" handler get this event,
-    // as we handle it specially ourselves.
-    aEvent.stopPropagation();
-
-    var typeItem = this._list.selectedItem;
-    var handlerInfo = this._handledTypes[typeItem.type];
-
-    let onComplete = () => {
-      // Rebuild the actions menu so that we revert to the previous selection,
-      // or "Always ask" if the previous default application has been removed
-      this.rebuildActionsMenu();
-
-      // update the richlistitem too. Will be visible when selecting another row
-      typeItem.setAttribute("actionDescription",
-                            this._describePreferredAction(handlerInfo));
-      if (!this._setIconClassForPreferredAction(handlerInfo, typeItem)) {
-        typeItem.setAttribute("actionIcon",
-                              this._getIconURLForPreferredAction(handlerInfo));
-      }
-    };
-
-    gSubDialog.open("chrome://browser/content/preferences/applicationManager.xul",
-                    "resizable=no", handlerInfo, onComplete);
-
-  },
-
-  chooseApp(aEvent) {
-    // Don't let the normal "on select action" handler get this event,
-    // as we handle it specially ourselves.
-    aEvent.stopPropagation();
-
-    var handlerApp;
-    let chooseAppCallback = aHandlerApp => {
-      // Rebuild the actions menu whether the user picked an app or canceled.
-      // If they picked an app, we want to add the app to the menu and select it.
-      // If they canceled, we want to go back to their previous selection.
-      this.rebuildActionsMenu();
-
-      // If the user picked a new app from the menu, select it.
-      if (aHandlerApp) {
-        let typeItem = this._list.selectedItem;
-        let actionsMenu =
-          document.getAnonymousElementByAttribute(typeItem, "class", "actionsMenu");
-        let menuItems = actionsMenu.menupopup.childNodes;
-        for (let i = 0; i < menuItems.length; i++) {
-          let menuItem = menuItems[i];
-          if (menuItem.handlerApp && menuItem.handlerApp.equals(aHandlerApp)) {
-            actionsMenu.selectedIndex = i;
-            this.onSelectAction(menuItem);
-            break;
-          }
-        }
-      }
-    };
-
-    if (AppConstants.platform == "win") {
-      var params = {};
-      var handlerInfo = this._handledTypes[this._list.selectedItem.type];
-
-      if (isFeedType(handlerInfo.type)) {
-        // MIME info will be null, create a temp object.
-        params.mimeInfo = this._mimeSvc.getFromTypeAndExtension(handlerInfo.type,
-                                                   handlerInfo.primaryExtension);
-      } else {
-        params.mimeInfo = handlerInfo.wrappedHandlerInfo;
-      }
-
-      params.title         = this._prefsBundle.getString("fpTitleChooseApp");
-      params.description   = handlerInfo.description;
-      params.filename      = null;
-      params.handlerApp    = null;
-
-      let onAppSelected = () => {
-        if (this.isValidHandlerApp(params.handlerApp)) {
-          handlerApp = params.handlerApp;
-
-          // Add the app to the type's list of possible handlers.
-          handlerInfo.addPossibleApplicationHandler(handlerApp);
-        }
-
-        chooseAppCallback(handlerApp);
-      };
-
-      gSubDialog.open("chrome://global/content/appPicker.xul",
-                      null, params, onAppSelected);
-    } else {
-      let winTitle = this._prefsBundle.getString("fpTitleChooseApp");
-      let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
-      let fpCallback = aResult => {
-        if (aResult == Ci.nsIFilePicker.returnOK && fp.file &&
-            this._isValidHandlerExecutable(fp.file)) {
-          handlerApp = Cc["@mozilla.org/uriloader/local-handler-app;1"].
-                       createInstance(Ci.nsILocalHandlerApp);
-          handlerApp.name = getFileDisplayName(fp.file);
-          handlerApp.executable = fp.file;
-
-          // Add the app to the type's list of possible handlers.
-          let handler = this._handledTypes[this._list.selectedItem.type];
-          handler.addPossibleApplicationHandler(handlerApp);
-
-          chooseAppCallback(handlerApp);
-        }
-      };
-
-      // Prompt the user to pick an app.  If they pick one, and it's a valid
-      // selection, then add it to the list of possible handlers.
-      fp.init(window, winTitle, Ci.nsIFilePicker.modeOpen);
-      fp.appendFilters(Ci.nsIFilePicker.filterApps);
-      fp.open(fpCallback);
-    }
-  },
-
-  // Mark which item in the list was last selected so we can reselect it
-  // when we rebuild the list or when the user returns to the prefpane.
-  onSelectionChanged() {
-    if (this._list.selectedItem)
-      this._list.setAttribute("lastSelectedType",
-                              this._list.selectedItem.getAttribute("type"));
-  },
-
-  _setIconClassForPreferredAction(aHandlerInfo, aElement) {
-    // If this returns true, the attribute that CSS sniffs for was set to something
-    // so you shouldn't manually set an icon URI.
-    // This removes the existing actionIcon attribute if any, even if returning false.
-    aElement.removeAttribute("actionIcon");
-
-    if (aHandlerInfo.alwaysAskBeforeHandling) {
-      aElement.setAttribute(APP_ICON_ATTR_NAME, "ask");
-      return true;
-    }
-
-    switch (aHandlerInfo.preferredAction) {
-      case Ci.nsIHandlerInfo.saveToDisk:
-        aElement.setAttribute(APP_ICON_ATTR_NAME, "save");
-        return true;
-
-      case Ci.nsIHandlerInfo.handleInternally:
-        if (isFeedType(aHandlerInfo.type)) {
-          aElement.setAttribute(APP_ICON_ATTR_NAME, "feed");
-          return true;
-        } else if (aHandlerInfo instanceof InternalHandlerInfoWrapper) {
-          aElement.setAttribute(APP_ICON_ATTR_NAME, "ask");
-          return true;
-        }
-        break;
-
-      case kActionUsePlugin:
-        aElement.setAttribute(APP_ICON_ATTR_NAME, "plugin");
-        return true;
-    }
-    aElement.removeAttribute(APP_ICON_ATTR_NAME);
-    return false;
-  },
-
-  _getIconURLForPreferredAction(aHandlerInfo) {
-    switch (aHandlerInfo.preferredAction) {
-      case Ci.nsIHandlerInfo.useSystemDefault:
-        return this._getIconURLForSystemDefault(aHandlerInfo);
-
-      case Ci.nsIHandlerInfo.useHelperApp:
-        let preferredApp = aHandlerInfo.preferredApplicationHandler;
-        if (this.isValidHandlerApp(preferredApp))
-          return this._getIconURLForHandlerApp(preferredApp);
-        // Explicit fall-through
-
-      // This should never happen, but if preferredAction is set to some weird
-      // value, then fall back to the generic application icon.
-      default:
-        return ICON_URL_APP;
-    }
-  },
-
-  _getIconURLForHandlerApp(aHandlerApp) {
-    if (aHandlerApp instanceof Ci.nsILocalHandlerApp)
-      return this._getIconURLForFile(aHandlerApp.executable);
-
-    if (aHandlerApp instanceof Ci.nsIWebHandlerApp)
-      return this._getIconURLForWebApp(aHandlerApp.uriTemplate);
-
-    if (aHandlerApp instanceof Ci.nsIWebContentHandlerInfo)
-      return this._getIconURLForWebApp(aHandlerApp.uri)
-
-    // We know nothing about other kinds of handler apps.
-    return "";
-  },
-
-  _getIconURLForFile(aFile) {
-    var fph = this._ioSvc.getProtocolHandler("file").
-              QueryInterface(Ci.nsIFileProtocolHandler);
-    var urlSpec = fph.getURLSpecFromFile(aFile);
-
-    return "moz-icon://" + urlSpec + "?size=16";
-  },
-
-  _getIconURLForWebApp(aWebAppURITemplate) {
-    var uri = this._ioSvc.newURI(aWebAppURITemplate);
-
-    // Unfortunately we can't use the favicon service to get the favicon,
-    // because the service looks in the annotations table for a record with
-    // the exact URL we give it, and users won't have such records for URLs
-    // they don't visit, and users won't visit the web app's URL template,
-    // they'll only visit URLs derived from that template (i.e. with %s
-    // in the template replaced by the URL of the content being handled).
-
-    if (/^https?$/.test(uri.scheme) && this._prefSvc.getBoolPref("browser.chrome.favicons"))
-      return uri.prePath + "/favicon.ico";
-
-    return "";
-  },
-
-  _getIconURLForSystemDefault(aHandlerInfo) {
-    // Handler info objects for MIME types on some OSes implement a property bag
-    // interface from which we can get an icon for the default app, so if we're
-    // dealing with a MIME type on one of those OSes, then try to get the icon.
-    if ("wrappedHandlerInfo" in aHandlerInfo) {
-      let wrappedHandlerInfo = aHandlerInfo.wrappedHandlerInfo;
-
-      if (wrappedHandlerInfo instanceof Ci.nsIMIMEInfo &&
-          wrappedHandlerInfo instanceof Ci.nsIPropertyBag) {
-        try {
-          let url = wrappedHandlerInfo.getProperty("defaultApplicationIconURL");
-          if (url)
-            return url + "?size=16";
-        } catch (ex) {}
-      }
-    }
-
-    // If this isn't a MIME type object on an OS that supports retrieving
-    // the icon, or if we couldn't retrieve the icon for some other reason,
-    // then use a generic icon.
-    return ICON_URL_APP;
-  },
-
-  // DOWNLOADS
-
-  /*
-   * Preferences:
-   *
-   * browser.download.useDownloadDir - bool
-   *   True - Save files directly to the folder configured via the
-   *   browser.download.folderList preference.
-   *   False - Always ask the user where to save a file and default to
-   *   browser.download.lastDir when displaying a folder picker dialog.
-   * browser.download.dir - local file handle
-   *   A local folder the user may have selected for downloaded files to be
-   *   saved. Migration of other browser settings may also set this path.
-   *   This folder is enabled when folderList equals 2.
-   * browser.download.lastDir - local file handle
-   *   May contain the last folder path accessed when the user browsed
-   *   via the file save-as dialog. (see contentAreaUtils.js)
-   * browser.download.folderList - int
-   *   Indicates the location users wish to save downloaded files too.
-   *   It is also used to display special file labels when the default
-   *   download location is either the Desktop or the Downloads folder.
-   *   Values:
-   *     0 - The desktop is the default download location.
-   *     1 - The system's downloads folder is the default download location.
-   *     2 - The default download location is elsewhere as specified in
-   *         browser.download.dir.
-   *     3 - The default download location is elsewhere as specified by
-   *         cloud storage API getDownloadFolder
-   * browser.download.downloadDir
-   *   deprecated.
-   * browser.download.defaultFolder
-   *   deprecated.
-   */
-
-  /**
-   * Enables/disables the folder field and Browse button based on whether a
-   * default download directory is being used.
-   */
-  readUseDownloadDir() {
-    var downloadFolder = document.getElementById("downloadFolder");
-    var chooseFolder = document.getElementById("chooseFolder");
-    var preference = document.getElementById("browser.download.useDownloadDir");
-    downloadFolder.disabled = !preference.value || preference.locked;
-    chooseFolder.disabled = !preference.value || preference.locked;
-
-    this.readCloudStorage().catch(Components.utils.reportError);
-    // don't override the preference's value in UI
-    return undefined;
-  },
-
-  /**
-   * Show/Hide the cloud storage radio button with provider name as label if
-   * cloud storage provider is in use.
-   * Select cloud storage radio button if browser.download.useDownloadDir is true
-   * and browser.download.folderList has value 3. Enables/disables the folder field
-   * and Browse button if cloud storage radio button is selected.
-   *
-   */
-  async readCloudStorage() {
-    // Get preferred provider in use display name
-    let providerDisplayName = await CloudStorage.getProviderIfInUse();
-    if (providerDisplayName) {
-      // Show cloud storage radio button with provider name in label
-      let saveToCloudRadio = document.getElementById("saveToCloud");
-      let cloudStrings = Services.strings.createBundle("resource://cloudstorage/preferences.properties");
-      saveToCloudRadio.label = cloudStrings.formatStringFromName("saveFilesToCloudStorage",
-                                                                 [providerDisplayName], 1);
-      saveToCloudRadio.hidden = false;
-
-      let useDownloadDirPref = document.getElementById("browser.download.useDownloadDir");
-      let folderListPref = document.getElementById("browser.download.folderList");
-
-      // Check if useDownloadDir is true and folderListPref is set to Cloud Storage value 3
-      // before selecting cloudStorageradio button. Disable folder field and Browse button if
-      // 'Save to Cloud Storage Provider' radio option is selected
-      if (useDownloadDirPref.value && folderListPref.value === 3) {
-        document.getElementById("saveWhere").selectedItem = saveToCloudRadio;
-        document.getElementById("downloadFolder").disabled = true;
-        document.getElementById("chooseFolder").disabled = true;
-      }
-    }
-  },
-
-  /**
-   * Handle clicks to 'Save To <custom path> or <system default downloads>' and
-   * 'Save to <cloud storage provider>' if cloud storage radio button is displayed in UI.
-   * Sets browser.download.folderList value and Enables/disables the folder field and Browse
-   * button based on option selected.
-   */
-  handleSaveToCommand(event) {
-    return this.handleSaveToCommandTask(event).catch(Components.utils.reportError);
-  },
-  async handleSaveToCommandTask(event) {
-    if (event.target.id !== "saveToCloud" && event.target.id !== "saveTo") {
-      return;
-    }
-    // Check if Save To Cloud Storage Provider radio option is displayed in UI
-    // before continuing.
-    let saveToCloudRadio = document.getElementById("saveToCloud");
-    if (!saveToCloudRadio.hidden) {
-      // When switching between SaveTo and SaveToCloud radio button
-      // with useDownloadDirPref value true, if selectedIndex is other than
-      // SaveTo radio button disable downloadFolder filefield and chooseFolder button
-      let saveWhere = document.getElementById("saveWhere");
-      let useDownloadDirPref = document.getElementById("browser.download.useDownloadDir");
-      if (useDownloadDirPref.value) {
-        let downloadFolder = document.getElementById("downloadFolder");
-        let chooseFolder = document.getElementById("chooseFolder");
-        downloadFolder.disabled = saveWhere.selectedIndex || useDownloadDirPref.locked;
-        chooseFolder.disabled = saveWhere.selectedIndex || useDownloadDirPref.locked;
-      }
-
-      // Set folderListPref value depending on radio option
-      // selected. folderListPref should be set to 3 if Save To Cloud Storage Provider
-      // option is selected. If user switch back to 'Save To' custom path or system
-      // default Downloads, check pref 'browser.download.dir' before setting respective
-      // folderListPref value. If currentDirPref is unspecified folderList should
-      // default to 1
-      let folderListPref = document.getElementById("browser.download.folderList");
-      let saveTo = document.getElementById("saveTo");
-      if (saveWhere.selectedItem == saveToCloudRadio) {
-        folderListPref.value = 3;
-      } else if (saveWhere.selectedItem == saveTo) {
-        let currentDirPref = document.getElementById("browser.download.dir");
-        folderListPref.value = currentDirPref.value ? await this._folderToIndex(currentDirPref.value) : 1;
-      }
-    }
-  },
-
-  /**
-   * Displays a file picker in which the user can choose the location where
-   * downloads are automatically saved, updating preferences and UI in
-   * response to the choice, if one is made.
-   */
-  chooseFolder() {
-    return this.chooseFolderTask().catch(Components.utils.reportError);
-  },
-  async chooseFolderTask() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let title = bundlePreferences.getString("chooseDownloadFolderTitle");
-    let folderListPref = document.getElementById("browser.download.folderList");
-    let currentDirPref = await this._indexToFolder(folderListPref.value);
-    let defDownloads = await this._indexToFolder(1);
-    let fp = Components.classes["@mozilla.org/filepicker;1"].
-             createInstance(Components.interfaces.nsIFilePicker);
-
-    fp.init(window, title, Components.interfaces.nsIFilePicker.modeGetFolder);
-    fp.appendFilters(Components.interfaces.nsIFilePicker.filterAll);
-    // First try to open what's currently configured
-    if (currentDirPref && currentDirPref.exists()) {
-      fp.displayDirectory = currentDirPref;
-    } else if (defDownloads && defDownloads.exists()) {
-      // Try the system's download dir
-      fp.displayDirectory = defDownloads;
-    } else {
-      // Fall back to Desktop
-      fp.displayDirectory = await this._indexToFolder(0);
-    }
-
-    let result = await new Promise(resolve => fp.open(resolve));
-    if (result != Components.interfaces.nsIFilePicker.returnOK) {
-      return;
-    }
-
-    let downloadDirPref = document.getElementById("browser.download.dir");
-    downloadDirPref.value = fp.file;
-    folderListPref.value = await this._folderToIndex(fp.file);
-    // Note, the real prefs will not be updated yet, so dnld manager's
-    // userDownloadsDirectory may not return the right folder after
-    // this code executes. displayDownloadDirPref will be called on
-    // the assignment above to update the UI.
-  },
-
-  /**
-   * Initializes the download folder display settings based on the user's
-   * preferences.
-   */
-  displayDownloadDirPref() {
-    this.displayDownloadDirPrefTask().catch(Components.utils.reportError);
-
-    // don't override the preference's value in UI
-    return undefined;
-  },
-
-  async displayDownloadDirPrefTask() {
-    var folderListPref = document.getElementById("browser.download.folderList");
-    var bundlePreferences = document.getElementById("bundlePreferences");
-    var downloadFolder = document.getElementById("downloadFolder");
-    var currentDirPref = document.getElementById("browser.download.dir");
-
-    // Used in defining the correct path to the folder icon.
-    var ios = Components.classes["@mozilla.org/network/io-service;1"]
-                        .getService(Components.interfaces.nsIIOService);
-    var fph = ios.getProtocolHandler("file")
-                 .QueryInterface(Components.interfaces.nsIFileProtocolHandler);
-    var iconUrlSpec;
-
-    let folderIndex = folderListPref.value;
-    if (folderIndex == 3) {
-      // When user has selected cloud storage, use value in currentDirPref to
-      // compute index to display download folder label and icon to avoid
-      // displaying blank downloadFolder label and icon on load of preferences UI
-      // Set folderIndex to 1 if currentDirPref is unspecified
-      folderIndex = currentDirPref.value ? await this._folderToIndex(currentDirPref.value) : 1;
-    }
-
-    // Display a 'pretty' label or the path in the UI.
-    if (folderIndex == 2) {
-      // Custom path selected and is configured
-      downloadFolder.label = this._getDisplayNameOfFile(currentDirPref.value);
-      iconUrlSpec = fph.getURLSpecFromFile(currentDirPref.value);
-    } else if (folderIndex == 1) {
-      // 'Downloads'
-      downloadFolder.label = bundlePreferences.getString("downloadsFolderName");
-      iconUrlSpec = fph.getURLSpecFromFile(await this._indexToFolder(1));
-    } else {
-      // 'Desktop'
-      downloadFolder.label = bundlePreferences.getString("desktopFolderName");
-      iconUrlSpec = fph.getURLSpecFromFile(await this._getDownloadsFolder("Desktop"));
-    }
-    downloadFolder.image = "moz-icon://" + iconUrlSpec + "?size=16";
-  },
-
-  /**
-   * Returns the textual path of a folder in readable form.
-   */
-  _getDisplayNameOfFile(aFolder) {
-    // TODO: would like to add support for 'Downloads on Macintosh HD'
-    //       for OS X users.
-    return aFolder ? aFolder.path : "";
-  },
-
-  /**
-   * Returns the Downloads folder.  If aFolder is "Desktop", then the Downloads
-   * folder returned is the desktop folder; otherwise, it is a folder whose name
-   * indicates that it is a download folder and whose path is as determined by
-   * the XPCOM directory service via the download manager's attribute
-   * defaultDownloadsDirectory.
-   *
-   * @throws if aFolder is not "Desktop" or "Downloads"
-   */
-  async _getDownloadsFolder(aFolder) {
-    switch (aFolder) {
-      case "Desktop":
-        var fileLoc = Components.classes["@mozilla.org/file/directory_service;1"]
-                                    .getService(Components.interfaces.nsIProperties);
-        return fileLoc.get("Desk", Components.interfaces.nsIFile);
-      case "Downloads":
-        let downloadsDir = await Downloads.getSystemDownloadsDirectory();
-        return new FileUtils.File(downloadsDir);
-    }
-    throw "ASSERTION FAILED: folder type should be 'Desktop' or 'Downloads'";
-  },
-
-  /**
-   * Determines the type of the given folder.
-   *
-   * @param   aFolder
-   *          the folder whose type is to be determined
-   * @returns integer
-   *          0 if aFolder is the Desktop or is unspecified,
-   *          1 if aFolder is the Downloads folder,
-   *          2 otherwise
-   */
-  async _folderToIndex(aFolder) {
-    if (!aFolder || aFolder.equals(await this._getDownloadsFolder("Desktop")))
-      return 0;
-    else if (aFolder.equals(await this._getDownloadsFolder("Downloads")))
-      return 1;
-    return 2;
-  },
-
-  /**
-   * Converts an integer into the corresponding folder.
-   *
-   * @param   aIndex
-   *          an integer
-   * @returns the Desktop folder if aIndex == 0,
-   *          the Downloads folder if aIndex == 1,
-   *          the folder stored in browser.download.dir
-   */
-  _indexToFolder(aIndex) {
-    switch (aIndex) {
-      case 0:
-        return this._getDownloadsFolder("Desktop");
-      case 1:
-        return this._getDownloadsFolder("Downloads");
-    }
-    var currentDirPref = document.getElementById("browser.download.dir");
-    return currentDirPref.value;
-  }
-};
-
-// Utilities
-
-function getFileDisplayName(file) {
-  if (AppConstants.platform == "win") {
-    if (file instanceof Ci.nsILocalFileWin) {
-      try {
-        return file.getVersionInfoField("FileDescription");
-      } catch (e) {}
-    }
-  }
-  if (AppConstants.platform == "macosx") {
-    if (file instanceof Ci.nsILocalFileMac) {
-      try {
-        return file.bundleDisplayName;
-      } catch (e) {}
-    }
-  }
-  return file.leafName;
-}
-
-function getLocalHandlerApp(aFile) {
-  var localHandlerApp = Cc["@mozilla.org/uriloader/local-handler-app;1"].
-                        createInstance(Ci.nsILocalHandlerApp);
-  localHandlerApp.name = getFileDisplayName(aFile);
-  localHandlerApp.executable = aFile;
-
-  return localHandlerApp;
-}
-
-/**
- * An enumeration of items in a JS array.
- *
- * FIXME: use ArrayConverter once it lands (bug 380839).
- *
- * @constructor
- */
-function ArrayEnumerator(aItems) {
-  this._index = 0;
-  this._contents = aItems;
-}
-
-ArrayEnumerator.prototype = {
-  _index: 0,
-
-  hasMoreElements() {
-    return this._index < this._contents.length;
-  },
-
-  getNext() {
-    return this._contents[this._index++];
-  }
-};
-
-function isFeedType(t) {
-  return t == TYPE_MAYBE_FEED || t == TYPE_MAYBE_VIDEO_FEED || t == TYPE_MAYBE_AUDIO_FEED;
-}
-
-// HandlerInfoWrapper
-
-/**
- * This object wraps nsIHandlerInfo with some additional functionality
- * the Applications prefpane needs to display and allow modification of
- * the list of handled types.
- *
- * We create an instance of this wrapper for each entry we might display
- * in the prefpane, and we compose the instances from various sources,
- * including plugins and the handler service.
- *
- * We don't implement all the original nsIHandlerInfo functionality,
- * just the stuff that the prefpane needs.
- *
- * In theory, all of the custom functionality in this wrapper should get
- * pushed down into nsIHandlerInfo eventually.
- */
-function HandlerInfoWrapper(aType, aHandlerInfo) {
-  this._type = aType;
-  this.wrappedHandlerInfo = aHandlerInfo;
-}
-
-HandlerInfoWrapper.prototype = {
-  // The wrapped nsIHandlerInfo object.  In general, this object is private,
-  // but there are a couple cases where callers access it directly for things
-  // we haven't (yet?) implemented, so we make it a public property.
-  wrappedHandlerInfo: null,
-
-
-  // Convenience Utils
-
-  _handlerSvc: Cc["@mozilla.org/uriloader/handler-service;1"].
-               getService(Ci.nsIHandlerService),
-
-  _prefSvc: Cc["@mozilla.org/preferences-service;1"].
-            getService(Ci.nsIPrefBranch),
-
-  _categoryMgr: Cc["@mozilla.org/categorymanager;1"].
-                getService(Ci.nsICategoryManager),
-
-  element(aID) {
-    return document.getElementById(aID);
-  },
-
-
-  // nsIHandlerInfo
-
-  // The MIME type or protocol scheme.
-  _type: null,
-  get type() {
-    return this._type;
-  },
-
-  get description() {
-    if (this.wrappedHandlerInfo.description)
-      return this.wrappedHandlerInfo.description;
-
-    if (this.primaryExtension) {
-      var extension = this.primaryExtension.toUpperCase();
-      return this.element("bundlePreferences").getFormattedString("fileEnding",
-                                                                  [extension]);
-    }
-
-    return this.type;
-  },
-
-  get preferredApplicationHandler() {
-    return this.wrappedHandlerInfo.preferredApplicationHandler;
-  },
-
-  set preferredApplicationHandler(aNewValue) {
-    this.wrappedHandlerInfo.preferredApplicationHandler = aNewValue;
-
-    // Make sure the preferred handler is in the set of possible handlers.
-    if (aNewValue)
-      this.addPossibleApplicationHandler(aNewValue)
-  },
-
-  get possibleApplicationHandlers() {
-    return this.wrappedHandlerInfo.possibleApplicationHandlers;
-  },
-
-  addPossibleApplicationHandler(aNewHandler) {
-    var possibleApps = this.possibleApplicationHandlers.enumerate();
-    while (possibleApps.hasMoreElements()) {
-      if (possibleApps.getNext().equals(aNewHandler))
-        return;
-    }
-    this.possibleApplicationHandlers.appendElement(aNewHandler);
-  },
-
-  removePossibleApplicationHandler(aHandler) {
-    var defaultApp = this.preferredApplicationHandler;
-    if (defaultApp && aHandler.equals(defaultApp)) {
-      // If the app we remove was the default app, we must make sure
-      // it won't be used anymore
-      this.alwaysAskBeforeHandling = true;
-      this.preferredApplicationHandler = null;
-    }
-
-    var handlers = this.possibleApplicationHandlers;
-    for (var i = 0; i < handlers.length; ++i) {
-      var handler = handlers.queryElementAt(i, Ci.nsIHandlerApp);
-      if (handler.equals(aHandler)) {
-        handlers.removeElementAt(i);
-        break;
-      }
-    }
-  },
-
-  get hasDefaultHandler() {
-    return this.wrappedHandlerInfo.hasDefaultHandler;
-  },
-
-  get defaultDescription() {
-    return this.wrappedHandlerInfo.defaultDescription;
-  },
-
-  // What to do with content of this type.
-  get preferredAction() {
-    // If we have an enabled plugin, then the action is to use that plugin.
-    if (this.pluginName && !this.isDisabledPluginType)
-      return kActionUsePlugin;
-
-    // If the action is to use a helper app, but we don't have a preferred
-    // handler app, then switch to using the system default, if any; otherwise
-    // fall back to saving to disk, which is the default action in nsMIMEInfo.
-    // Note: "save to disk" is an invalid value for protocol info objects,
-    // but the alwaysAskBeforeHandling getter will detect that situation
-    // and always return true in that case to override this invalid value.
-    if (this.wrappedHandlerInfo.preferredAction == Ci.nsIHandlerInfo.useHelperApp &&
-        !gMainPane.isValidHandlerApp(this.preferredApplicationHandler)) {
-      if (this.wrappedHandlerInfo.hasDefaultHandler)
-        return Ci.nsIHandlerInfo.useSystemDefault;
-      return Ci.nsIHandlerInfo.saveToDisk;
-    }
-
-    return this.wrappedHandlerInfo.preferredAction;
-  },
-
-  set preferredAction(aNewValue) {
-    // If the action is to use the plugin,
-    // we must set the preferred action to "save to disk".
-    // But only if it's not currently the preferred action.
-    if ((aNewValue == kActionUsePlugin) &&
-        (this.preferredAction != Ci.nsIHandlerInfo.saveToDisk)) {
-      aNewValue = Ci.nsIHandlerInfo.saveToDisk;
-    }
-
-    // We don't modify the preferred action if the new action is to use a plugin
-    // because handler info objects don't understand our custom "use plugin"
-    // value.  Also, leaving it untouched means that we can automatically revert
-    // to the old setting if the user ever removes the plugin.
-
-    if (aNewValue != kActionUsePlugin)
-      this.wrappedHandlerInfo.preferredAction = aNewValue;
-  },
-
-  get alwaysAskBeforeHandling() {
-    // If this type is handled only by a plugin, we can't trust the value
-    // in the handler info object, since it'll be a default based on the absence
-    // of any user configuration, and the default in that case is to always ask,
-    // even though we never ask for content handled by a plugin, so special case
-    // plugin-handled types by returning false here.
-    if (this.pluginName && this.handledOnlyByPlugin)
-      return false;
-
-    // If this is a protocol type and the preferred action is "save to disk",
-    // which is invalid for such types, then return true here to override that
-    // action.  This could happen when the preferred action is to use a helper
-    // app, but the preferredApplicationHandler is invalid, and there isn't
-    // a default handler, so the preferredAction getter returns save to disk
-    // instead.
-    if (!(this.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo) &&
-        this.preferredAction == Ci.nsIHandlerInfo.saveToDisk)
-      return true;
-
-    return this.wrappedHandlerInfo.alwaysAskBeforeHandling;
-  },
-
-  set alwaysAskBeforeHandling(aNewValue) {
-    this.wrappedHandlerInfo.alwaysAskBeforeHandling = aNewValue;
-  },
-
-
-  // nsIMIMEInfo
-
-  // The primary file extension associated with this type, if any.
-  //
-  // XXX Plugin objects contain an array of MimeType objects with "suffixes"
-  // properties; if this object has an associated plugin, shouldn't we check
-  // those properties for an extension?
-  get primaryExtension() {
-    try {
-      if (this.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo &&
-          this.wrappedHandlerInfo.primaryExtension)
-        return this.wrappedHandlerInfo.primaryExtension
-    } catch (ex) {}
-
-    return null;
-  },
-
-
-  // Plugin Handling
-
-  // A plugin that can handle this type, if any.
-  //
-  // Note: just because we have one doesn't mean it *will* handle the type.
-  // That depends on whether or not the type is in the list of types for which
-  // plugin handling is disabled.
-  plugin: null,
-
-  // Whether or not this type is only handled by a plugin or is also handled
-  // by some user-configured action as specified in the handler info object.
-  //
-  // Note: we can't just check if there's a handler info object for this type,
-  // because OS and user configuration is mixed up in the handler info object,
-  // so we always need to retrieve it for the OS info and can't tell whether
-  // it represents only OS-default information or user-configured information.
-  //
-  // FIXME: once handler info records are broken up into OS-provided records
-  // and user-configured records, stop using this boolean flag and simply
-  // check for the presence of a user-configured record to determine whether
-  // or not this type is only handled by a plugin.  Filed as bug 395142.
-  handledOnlyByPlugin: undefined,
-
-  get isDisabledPluginType() {
-    return this._getDisabledPluginTypes().indexOf(this.type) != -1;
-  },
-
-  _getDisabledPluginTypes() {
-    var types = "";
-
-    if (this._prefSvc.prefHasUserValue(PREF_DISABLED_PLUGIN_TYPES))
-      types = this._prefSvc.getCharPref(PREF_DISABLED_PLUGIN_TYPES);
-
-    // Only split if the string isn't empty so we don't end up with an array
-    // containing a single empty string.
-    if (types != "")
-      return types.split(",");
-
-    return [];
-  },
-
-  disablePluginType() {
-    var disabledPluginTypes = this._getDisabledPluginTypes();
-
-    if (disabledPluginTypes.indexOf(this.type) == -1)
-      disabledPluginTypes.push(this.type);
-
-    this._prefSvc.setCharPref(PREF_DISABLED_PLUGIN_TYPES,
-                              disabledPluginTypes.join(","));
-
-    // Update the category manager so existing browser windows update.
-    this._categoryMgr.deleteCategoryEntry("Gecko-Content-Viewers",
-                                          this.type,
-                                          false);
-  },
-
-  enablePluginType() {
-    var disabledPluginTypes = this._getDisabledPluginTypes();
-
-    var type = this.type;
-    disabledPluginTypes = disabledPluginTypes.filter(v => v != type);
-
-    this._prefSvc.setCharPref(PREF_DISABLED_PLUGIN_TYPES,
-                              disabledPluginTypes.join(","));
-
-    // Update the category manager so existing browser windows update.
-    this._categoryMgr.
-      addCategoryEntry("Gecko-Content-Viewers",
-                       this.type,
-                       "@mozilla.org/content/plugin/document-loader-factory;1",
-                       false,
-                       true);
-  },
-
-
-  // Storage
-
-  store() {
-    this._handlerSvc.store(this.wrappedHandlerInfo);
-  },
-
-
-  // Icons
-
-  get smallIcon() {
-    return this._getIcon(16);
-  },
-
-  _getIcon(aSize) {
-    if (this.primaryExtension)
-      return "moz-icon://goat." + this.primaryExtension + "?size=" + aSize;
-
-    if (this.wrappedHandlerInfo instanceof Ci.nsIMIMEInfo)
-      return "moz-icon://goat?size=" + aSize + "&contentType=" + this.type;
-
-    // FIXME: consider returning some generic icon when we can't get a URL for
-    // one (for example in the case of protocol schemes).  Filed as bug 395141.
-    return null;
-  }
-
-};
-
-
-// Feed Handler Info
-
-/**
- * This object implements nsIHandlerInfo for the feed types.  It's a separate
- * object because we currently store handling information for the feed type
- * in a set of preferences rather than the nsIHandlerService-managed datastore.
- *
- * This object inherits from HandlerInfoWrapper in order to get functionality
- * that isn't special to the feed type.
- *
- * XXX Should we inherit from HandlerInfoWrapper?  After all, we override
- * most of that wrapper's properties and methods, and we have to dance around
- * the fact that the wrapper expects to have a wrappedHandlerInfo, which we
- * don't provide.
- */
-
-function FeedHandlerInfo(aMIMEType) {
-  HandlerInfoWrapper.call(this, aMIMEType, null);
-}
-
-FeedHandlerInfo.prototype = {
-  __proto__: HandlerInfoWrapper.prototype,
-
-  // Convenience Utils
-
-  _converterSvc:
-    Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
-    getService(Ci.nsIWebContentConverterService),
-
-  _shellSvc: AppConstants.HAVE_SHELL_SERVICE ? getShellService() : null,
-
-  // nsIHandlerInfo
-
-  get description() {
-    return this.element("bundlePreferences").getString(this._appPrefLabel);
-  },
-
-  get preferredApplicationHandler() {
-    switch (this.element(this._prefSelectedReader).value) {
-      case "client":
-        var file = this.element(this._prefSelectedApp).value;
-        if (file)
-          return getLocalHandlerApp(file);
-
-        return null;
-
-      case "web":
-        var uri = this.element(this._prefSelectedWeb).value;
-        if (!uri)
-          return null;
-        return this._converterSvc.getWebContentHandlerByURI(this.type, uri);
-
-      case "bookmarks":
-      default:
-        // When the pref is set to bookmarks, we handle feeds internally,
-        // we don't forward them to a local or web handler app, so there is
-        // no preferred handler.
-        return null;
-    }
-  },
-
-  set preferredApplicationHandler(aNewValue) {
-    if (aNewValue instanceof Ci.nsILocalHandlerApp) {
-      this.element(this._prefSelectedApp).value = aNewValue.executable;
-      this.element(this._prefSelectedReader).value = "client";
-    } else if (aNewValue instanceof Ci.nsIWebContentHandlerInfo) {
-      this.element(this._prefSelectedWeb).value = aNewValue.uri;
-      this.element(this._prefSelectedReader).value = "web";
-      // Make the web handler be the new "auto handler" for feeds.
-      // Note: we don't have to unregister the auto handler when the user picks
-      // a non-web handler (local app, Live Bookmarks, etc.) because the service
-      // only uses the "auto handler" when the selected reader is a web handler.
-      // We also don't have to unregister it when the user turns on "always ask"
-      // (i.e. preview in browser), since that also overrides the auto handler.
-      this._converterSvc.setAutoHandler(this.type, aNewValue);
-    }
-  },
-
-  _possibleApplicationHandlers: null,
-
-  get possibleApplicationHandlers() {
-    if (this._possibleApplicationHandlers)
-      return this._possibleApplicationHandlers;
-
-    // A minimal implementation of nsIMutableArray.  It only supports the two
-    // methods its callers invoke, namely appendElement and nsIArray::enumerate.
-    this._possibleApplicationHandlers = {
-      _inner: [],
-      _removed: [],
-
-      QueryInterface(aIID) {
-        if (aIID.equals(Ci.nsIMutableArray) ||
-            aIID.equals(Ci.nsIArray) ||
-            aIID.equals(Ci.nsISupports))
-          return this;
-
-        throw Cr.NS_ERROR_NO_INTERFACE;
-      },
-
-      get length() {
-        return this._inner.length;
-      },
-
-      enumerate() {
-        return new ArrayEnumerator(this._inner);
-      },
-
-      appendElement(aHandlerApp, aWeak) {
-        this._inner.push(aHandlerApp);
-      },
-
-      removeElementAt(aIndex) {
-        this._removed.push(this._inner[aIndex]);
-        this._inner.splice(aIndex, 1);
-      },
-
-      queryElementAt(aIndex, aInterface) {
-        return this._inner[aIndex].QueryInterface(aInterface);
-      }
-    };
-
-    // Add the selected local app if it's different from the OS default handler.
-    // Unlike for other types, we can store only one local app at a time for the
-    // feed type, since we store it in a preference that historically stores
-    // only a single path.  But we display all the local apps the user chooses
-    // while the prefpane is open, only dropping the list when the user closes
-    // the prefpane, for maximum usability and consistency with other types.
-    var preferredAppFile = this.element(this._prefSelectedApp).value;
-    if (preferredAppFile) {
-      let preferredApp = getLocalHandlerApp(preferredAppFile);
-      let defaultApp = this._defaultApplicationHandler;
-      if (!defaultApp || !defaultApp.equals(preferredApp))
-        this._possibleApplicationHandlers.appendElement(preferredApp);
-    }
-
-    // Add the registered web handlers.  There can be any number of these.
-    var webHandlers = this._converterSvc.getContentHandlers(this.type);
-    for (let webHandler of webHandlers)
-      this._possibleApplicationHandlers.appendElement(webHandler);
-
-    return this._possibleApplicationHandlers;
-  },
-
-  __defaultApplicationHandler: undefined,
-  get _defaultApplicationHandler() {
-    if (typeof this.__defaultApplicationHandler != "undefined")
-      return this.__defaultApplicationHandler;
-
-    var defaultFeedReader = null;
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      try {
-        defaultFeedReader = this._shellSvc.defaultFeedReader;
-      } catch (ex) {
-        // no default reader or _shellSvc is null
-      }
-    }
-
-    if (defaultFeedReader) {
-      let handlerApp = Cc["@mozilla.org/uriloader/local-handler-app;1"].
-                       createInstance(Ci.nsIHandlerApp);
-      handlerApp.name = getFileDisplayName(defaultFeedReader);
-      handlerApp.QueryInterface(Ci.nsILocalHandlerApp);
-      handlerApp.executable = defaultFeedReader;
-
-      this.__defaultApplicationHandler = handlerApp;
-    } else {
-      this.__defaultApplicationHandler = null;
-    }
-
-    return this.__defaultApplicationHandler;
-  },
-
-  get hasDefaultHandler() {
-    if (AppConstants.HAVE_SHELL_SERVICE) {
-      try {
-        if (this._shellSvc.defaultFeedReader)
-          return true;
-      } catch (ex) {
-        // no default reader or _shellSvc is null
-      }
-    }
-
-    return false;
-  },
-
-  get defaultDescription() {
-    if (this.hasDefaultHandler)
-      return this._defaultApplicationHandler.name;
-
-    // Should we instead return null?
-    return "";
-  },
-
-  // What to do with content of this type.
-  get preferredAction() {
-    switch (this.element(this._prefSelectedAction).value) {
-
-      case "bookmarks":
-        return Ci.nsIHandlerInfo.handleInternally;
-
-      case "reader": {
-        let preferredApp = this.preferredApplicationHandler;
-        let defaultApp = this._defaultApplicationHandler;
-
-        // If we have a valid preferred app, return useSystemDefault if it's
-        // the default app; otherwise return useHelperApp.
-        if (gMainPane.isValidHandlerApp(preferredApp)) {
-          if (defaultApp && defaultApp.equals(preferredApp))
-            return Ci.nsIHandlerInfo.useSystemDefault;
-
-          return Ci.nsIHandlerInfo.useHelperApp;
-        }
-
-        // The pref is set to "reader", but we don't have a valid preferred app.
-        // What do we do now?  Not sure this is the best option (perhaps we
-        // should direct the user to the default app, if any), but for now let's
-        // direct the user to live bookmarks.
-        return Ci.nsIHandlerInfo.handleInternally;
-      }
-
-      // If the action is "ask", then alwaysAskBeforeHandling will override
-      // the action, so it doesn't matter what we say it is, it just has to be
-      // something that doesn't cause the controller to hide the type.
-      case "ask":
-      default:
-        return Ci.nsIHandlerInfo.handleInternally;
-    }
-  },
-
-  set preferredAction(aNewValue) {
-    switch (aNewValue) {
-
-      case Ci.nsIHandlerInfo.handleInternally:
-        this.element(this._prefSelectedReader).value = "bookmarks";
-        break;
-
-      case Ci.nsIHandlerInfo.useHelperApp:
-        this.element(this._prefSelectedAction).value = "reader";
-        // The controller has already set preferredApplicationHandler
-        // to the new helper app.
-        break;
-
-      case Ci.nsIHandlerInfo.useSystemDefault:
-        this.element(this._prefSelectedAction).value = "reader";
-        this.preferredApplicationHandler = this._defaultApplicationHandler;
-        break;
-    }
-  },
-
-  get alwaysAskBeforeHandling() {
-    return this.element(this._prefSelectedAction).value == "ask";
-  },
-
-  set alwaysAskBeforeHandling(aNewValue) {
-    if (aNewValue == true)
-      this.element(this._prefSelectedAction).value = "ask";
-    else
-      this.element(this._prefSelectedAction).value = "reader";
-  },
-
-  // Whether or not we are currently storing the action selected by the user.
-  // We use this to suppress notification-triggered updates to the list when
-  // we make changes that may spawn such updates, specifically when we change
-  // the action for the feed type, which results in feed preference updates,
-  // which spawn "pref changed" notifications that would otherwise cause us
-  // to rebuild the view unnecessarily.
-  _storingAction: false,
-
-
-  // nsIMIMEInfo
-
-  get primaryExtension() {
-    return "xml";
-  },
-
-
-  // Storage
-
-  // Changes to the preferred action and handler take effect immediately
-  // (we write them out to the preferences right as they happen),
-  // so we when the controller calls store() after modifying the handlers,
-  // the only thing we need to store is the removal of possible handlers
-  // XXX Should we hold off on making the changes until this method gets called?
-  store() {
-    for (let app of this._possibleApplicationHandlers._removed) {
-      if (app instanceof Ci.nsILocalHandlerApp) {
-        let pref = this.element(PREF_FEED_SELECTED_APP);
-        var preferredAppFile = pref.value;
-        if (preferredAppFile) {
-          let preferredApp = getLocalHandlerApp(preferredAppFile);
-          if (app.equals(preferredApp))
-            pref.reset();
-        }
-      } else {
-        app.QueryInterface(Ci.nsIWebContentHandlerInfo);
-        this._converterSvc.removeContentHandler(app.contentType, app.uri);
-      }
-    }
-    this._possibleApplicationHandlers._removed = [];
-  },
-
-
-  // Icons
-
-  get smallIcon() {
-    return this._smallIcon;
-  }
-
-};
-
-var feedHandlerInfo = {
-  __proto__: new FeedHandlerInfo(TYPE_MAYBE_FEED),
-  _prefSelectedApp: PREF_FEED_SELECTED_APP,
-  _prefSelectedWeb: PREF_FEED_SELECTED_WEB,
-  _prefSelectedAction: PREF_FEED_SELECTED_ACTION,
-  _prefSelectedReader: PREF_FEED_SELECTED_READER,
-  _smallIcon: "chrome://browser/skin/feeds/feedIcon16.png",
-  _appPrefLabel: "webFeed"
-}
-
-var videoFeedHandlerInfo = {
-  __proto__: new FeedHandlerInfo(TYPE_MAYBE_VIDEO_FEED),
-  _prefSelectedApp: PREF_VIDEO_FEED_SELECTED_APP,
-  _prefSelectedWeb: PREF_VIDEO_FEED_SELECTED_WEB,
-  _prefSelectedAction: PREF_VIDEO_FEED_SELECTED_ACTION,
-  _prefSelectedReader: PREF_VIDEO_FEED_SELECTED_READER,
-  _smallIcon: "chrome://browser/skin/feeds/videoFeedIcon16.png",
-  _appPrefLabel: "videoPodcastFeed"
-}
-
-var audioFeedHandlerInfo = {
-  __proto__: new FeedHandlerInfo(TYPE_MAYBE_AUDIO_FEED),
-  _prefSelectedApp: PREF_AUDIO_FEED_SELECTED_APP,
-  _prefSelectedWeb: PREF_AUDIO_FEED_SELECTED_WEB,
-  _prefSelectedAction: PREF_AUDIO_FEED_SELECTED_ACTION,
-  _prefSelectedReader: PREF_AUDIO_FEED_SELECTED_READER,
-  _smallIcon: "chrome://browser/skin/feeds/audioFeedIcon16.png",
-  _appPrefLabel: "audioPodcastFeed"
-}
-
-/**
- * InternalHandlerInfoWrapper provides a basic mechanism to create an internal
- * mime type handler that can be enabled/disabled in the applications preference
- * menu.
- */
-function InternalHandlerInfoWrapper(aMIMEType) {
-  var mimeSvc = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
-  var handlerInfo = mimeSvc.getFromTypeAndExtension(aMIMEType, null);
-
-  HandlerInfoWrapper.call(this, aMIMEType, handlerInfo);
-}
-
-InternalHandlerInfoWrapper.prototype = {
-  __proto__: HandlerInfoWrapper.prototype,
-
-  // Override store so we so we can notify any code listening for registration
-  // or unregistration of this handler.
-  store() {
-    HandlerInfoWrapper.prototype.store.call(this);
-    Services.obs.notifyObservers(null, this._handlerChanged);
-  },
-
-  get enabled() {
-    throw Cr.NS_ERROR_NOT_IMPLEMENTED;
-  },
-
-  get description() {
-    return this.element("bundlePreferences").getString(this._appPrefLabel);
-  }
-};
-
-var pdfHandlerInfo = {
-  __proto__: new InternalHandlerInfoWrapper(TYPE_PDF),
-  _handlerChanged: TOPIC_PDFJS_HANDLER_CHANGED,
-  _appPrefLabel: "portableDocumentFormat",
-  get enabled() {
-    return !Services.prefs.getBoolPref(PREF_PDFJS_DISABLED);
-  },
-};
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/main.xul
+++ /dev/null
@@ -1,1017 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-<!-- General panel -->
-
-<script type="application/javascript"
-        src="chrome://browser/content/preferences/in-content-new/main.js"/>
-
-#ifdef MOZ_UPDATER
-  <script type="application/javascript" src="chrome://browser/content/aboutDialog-appUpdater.js"/>
-#endif
-
-<script type="application/javascript"
-        src="chrome://mozapps/content/preferences/fontbuilder.js"/>
-
-<stringbundle id="bundlePreferences" src="chrome://browser/locale/preferences.properties"/>
-
-<preferences id="mainPreferences" hidden="true" data-category="paneGeneral">
-
-#ifdef E10S_TESTING_ONLY
-    <preference id="browser.tabs.remote.autostart"
-                name="browser.tabs.remote.autostart"
-                type="bool"/>
-    <preference id="e10sTempPref"
-                name="browser.tabs.remote.autostart.2"
-                type="bool"/>
-    <preference id="e10sForceEnable"
-                name="browser.tabs.remote.force-enable"
-                type="bool"/>
-#endif
-
-    <!-- Startup -->
-    <preference id="browser.startup.page"
-                name="browser.startup.page"
-                type="int"/>
-    <preference id="browser.startup.homepage"
-                name="browser.startup.homepage"
-                type="wstring"/>
-
-#ifdef HAVE_SHELL_SERVICE
-    <preference id="browser.shell.checkDefaultBrowser"
-                name="browser.shell.checkDefaultBrowser"
-                type="bool"/>
-
-    <preference id="pref.general.disable_button.default_browser"
-                name="pref.general.disable_button.default_browser"
-                type="bool"/>
-#endif
-
-    <preference id="pref.browser.homepage.disable_button.current_page"
-                name="pref.browser.homepage.disable_button.current_page"
-                type="bool"/>
-    <preference id="pref.browser.homepage.disable_button.bookmark_page"
-                name="pref.browser.homepage.disable_button.bookmark_page"
-                type="bool"/>
-    <preference id="pref.browser.homepage.disable_button.restore_default"
-                name="pref.browser.homepage.disable_button.restore_default"
-                type="bool"/>
-
-    <preference id="browser.privatebrowsing.autostart"
-                name="browser.privatebrowsing.autostart"
-                type="bool"/>
-
-    <!-- Downloads -->
-    <preference id="browser.download.useDownloadDir"
-                name="browser.download.useDownloadDir"
-                type="bool"/>
-
-    <preference id="browser.download.folderList"
-                name="browser.download.folderList"
-                type="int"/>
-    <preference id="browser.download.dir"
-                name="browser.download.dir"
-                type="file"/>
-    <!-- Tab preferences
-    Preferences:
-
-    browser.link.open_newwindow
-        1 opens such links in the most recent window or tab,
-        2 opens such links in a new window,
-        3 opens such links in a new tab
-    browser.tabs.loadInBackground
-    - true if display should switch to a new tab which has been opened from a
-      link, false if display shouldn't switch
-    browser.tabs.warnOnClose
-    - true if when closing a window with multiple tabs the user is warned and
-      allowed to cancel the action, false to just close the window
-    browser.tabs.warnOnOpen
-    - true if the user should be warned if he attempts to open a lot of tabs at
-      once (e.g. a large folder of bookmarks), false otherwise
-    browser.taskbar.previews.enable
-    - true if tabs are to be shown in the Windows 7 taskbar
-    -->
-
-    <preference id="browser.link.open_newwindow"
-                name="browser.link.open_newwindow"
-                type="int"/>
-    <preference id="browser.tabs.loadInBackground"
-                name="browser.tabs.loadInBackground"
-                type="bool"
-                inverted="true"/>
-    <preference id="browser.tabs.warnOnClose"
-                name="browser.tabs.warnOnClose"
-                type="bool"/>
-    <preference id="browser.tabs.warnOnOpen"
-                name="browser.tabs.warnOnOpen"
-                type="bool"/>
-    <preference id="browser.sessionstore.restore_on_demand"
-                name="browser.sessionstore.restore_on_demand"
-                type="bool"/>
-#ifdef XP_WIN
-    <preference id="browser.taskbar.previews.enable"
-                name="browser.taskbar.previews.enable"
-                type="bool"/>
-#endif
-    <preference id="browser.ctrlTab.previews"
-                name="browser.ctrlTab.previews"
-                type="bool"/>
-
-  <!-- Fonts -->
-  <preference id="font.language.group"
-              name="font.language.group"
-              type="wstring"/>
-
-  <!-- Languages -->
-  <preference id="browser.translation.detectLanguage"
-              name="browser.translation.detectLanguage"
-              type="bool"/>
-
-  <!-- General tab -->
-
-  <!-- Accessibility
-   * accessibility.browsewithcaret
-     - true enables keyboard navigation and selection within web pages using a
-       visible caret, false uses normal keyboard navigation with no caret
-   * accessibility.typeaheadfind
-     - when set to true, typing outside text areas and input boxes will
-       automatically start searching for what's typed within the current
-       document; when set to false, no search action happens -->
-  <preference id="accessibility.browsewithcaret"
-              name="accessibility.browsewithcaret"
-              type="bool"/>
-  <preference id="accessibility.typeaheadfind"
-              name="accessibility.typeaheadfind"
-              type="bool"/>
-  <preference id="accessibility.blockautorefresh"
-              name="accessibility.blockautorefresh"
-              type="bool"/>
-#ifdef XP_WIN
-  <preference id="ui.osk.enabled"
-              name="ui.osk.enabled"
-              type="bool"/>
-#endif
-  <!-- Browsing
-   * general.autoScroll
-     - when set to true, clicking the scroll wheel on the mouse activates a
-       mouse mode where moving the mouse down scrolls the document downward with
-       speed correlated with the distance of the cursor from the original
-       position at which the click occurred (and likewise with movement upward);
-       if false, this behavior is disabled
-   * general.smoothScroll
-     - set to true to enable finer page scrolling than line-by-line on page-up,
-       page-down, and other such page movements -->
-  <preference id="general.autoScroll"
-              name="general.autoScroll"
-              type="bool"/>
-  <preference id="general.smoothScroll"
-              name="general.smoothScroll"
-              type="bool"/>
-  <preference id="layout.spellcheckDefault"
-              name="layout.spellcheckDefault"
-              type="int"/>
-
-  <preference id="toolkit.telemetry.enabled"
-              name="toolkit.telemetry.enabled"
-              type="bool"/>
-
-  <preference id="browser.preferences.defaultPerformanceSettings.enabled"
-              name="browser.preferences.defaultPerformanceSettings.enabled"
-              type="bool"/>
-
-  <preference id="dom.ipc.processCount"
-              name="dom.ipc.processCount"
-              type="int"/>
-
-  <preference id="dom.ipc.processCount.web"
-              name="dom.ipc.processCount.web"
-              type="int"/>
-
-  <preference id="layers.acceleration.disabled"
-              name="layers.acceleration.disabled"
-              type="bool"
-              inverted="true"/>
-
-  <!-- Files and Applications -->
-  <preference id="browser.feeds.handler"
-              name="browser.feeds.handler"
-              type="string"/>
-  <preference id="browser.feeds.handler.default"
-              name="browser.feeds.handler.default"
-              type="string"/>
-  <preference id="browser.feeds.handlers.application"
-              name="browser.feeds.handlers.application"
-              type="file"/>
-  <preference id="browser.feeds.handlers.webservice"
-              name="browser.feeds.handlers.webservice"
-              type="string"/>
-
-  <preference id="browser.videoFeeds.handler"
-              name="browser.videoFeeds.handler"
-              type="string"/>
-  <preference id="browser.videoFeeds.handler.default"
-              name="browser.videoFeeds.handler.default"
-              type="string"/>
-  <preference id="browser.videoFeeds.handlers.application"
-              name="browser.videoFeeds.handlers.application"
-              type="file"/>
-  <preference id="browser.videoFeeds.handlers.webservice"
-              name="browser.videoFeeds.handlers.webservice"
-              type="string"/>
-
-  <preference id="browser.audioFeeds.handler"
-              name="browser.audioFeeds.handler"
-              type="string"/>
-  <preference id="browser.audioFeeds.handler.default"
-              name="browser.audioFeeds.handler.default"
-              type="string"/>
-  <preference id="browser.audioFeeds.handlers.application"
-              name="browser.audioFeeds.handlers.application"
-              type="file"/>
-  <preference id="browser.audioFeeds.handlers.webservice"
-              name="browser.audioFeeds.handlers.webservice"
-              type="string"/>
-
-  <preference id="pref.downloads.disable_button.edit_actions"
-              name="pref.downloads.disable_button.edit_actions"
-              type="bool"/>
-
-  <!-- DRM content -->
-  <preference id="media.eme.enabled"
-              name="media.eme.enabled"
-              type="bool"/>
-
-  <!-- Update -->
-  <preference id="browser.preferences.advanced.selectedTabIndex"
-              name="browser.preferences.advanced.selectedTabIndex"
-              type="int"/>
-
-#ifdef MOZ_UPDATER
-  <preference id="app.update.enabled"
-              name="app.update.enabled"
-              type="bool"/>
-  <preference id="app.update.auto"
-              name="app.update.auto"
-              type="bool"/>
-
-  <preference id="app.update.disable_button.showUpdateHistory"
-              name="app.update.disable_button.showUpdateHistory"
-              type="bool"/>
-
-#ifdef MOZ_MAINTENANCE_SERVICE
-  <preference id="app.update.service.enabled"
-              name="app.update.service.enabled"
-              type="bool"/>
-#endif
-#endif
-
-  <preference id="browser.search.update"
-              name="browser.search.update"
-              type="bool"/>
-</preferences>
-
-<hbox id="generalCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&paneGeneral.title;</label>
-</hbox>
-
-<!-- Startup -->
-<groupbox id="startupGroup"
-          data-category="paneGeneral"
-          hidden="true">
-  <caption><label>&startup.label;</label></caption>
-
-#ifdef MOZ_DEV_EDITION
-  <vbox id="separateProfileBox">
-    <checkbox id="separateProfileMode"
-              label="&separateProfileMode.label;"/>
-    <hbox align="center" class="indent">
-      <label id="useFirefoxSync">&useFirefoxSync.label;</label>
-      <deck id="getStarted">
-        <label class="text-link">&getStarted.notloggedin.label;</label>
-        <label class="text-link">&getStarted.configured.label;</label>
-      </deck>
-    </hbox>
-  </vbox>
-#endif
-
-#ifdef E10S_TESTING_ONLY
-  <checkbox id="e10sAutoStart"
-            label="&e10sEnabled.label;"/>
-#endif
-
-#ifdef HAVE_SHELL_SERVICE
-  <vbox id="defaultBrowserBox">
-    <checkbox id="alwaysCheckDefault" preference="browser.shell.checkDefaultBrowser"
-              label="&alwaysCheckDefault2.label;" accesskey="&alwaysCheckDefault2.accesskey;"/>
-    <deck id="setDefaultPane">
-      <hbox align="center" class="indent">
-        <image class="face-sad"/>
-        <label id="isNotDefaultLabel" flex="1">&isNotDefault.label;</label>
-        <button id="setDefaultButton"
-                class="accessory-button"
-                label="&setAsMyDefaultBrowser3.label;" accesskey="&setAsMyDefaultBrowser3.accesskey;"
-                preference="pref.general.disable_button.default_browser"/>
-      </hbox>
-      <hbox align="center" class="indent">
-        <image class="face-smile"/>
-        <label id="isDefaultLabel" flex="1">&isDefault.label;</label>
-      </hbox>
-    </deck>
-  </vbox>
-#endif
-
-  <vbox id="startupPageBox">
-    <label accesskey="&startupPage2.accesskey;"
-           control="browserStartupPage">&startupPage2.label;</label>
-    <radiogroup id="browserStartupPage"
-                preference="browser.startup.page">
-      <radio label="&startupUserHomePage.label;"
-             value="1"
-             id="browserStartupHomePage"/>
-      <radio label="&startupBlankPage.label;"
-             value="0"
-             id="browserStartupBlank"/>
-      <radio label="&startupPrevSession.label;"
-             value="3"
-             id="browserStartupLastSession"/>
-    </radiogroup>
-  </vbox>
-</groupbox>
-
-<!-- Home Page -->
-<groupbox id="homepageGroup"
-          data-category="paneGeneral"
-          hidden="true">
-  <caption><label>&homepage2.label;</label></caption>
-
-  <vbox>
-    <textbox id="browserHomePage"
-             class="uri-element"
-             type="autocomplete"
-             autocompletesearch="unifiedcomplete"
-             onsyncfrompreference="return gMainPane.syncFromHomePref();"
-             onsynctopreference="return gMainPane.syncToHomePref(this.value);"
-             placeholder="&abouthome.pageTitle;"
-             preference="browser.startup.homepage"/>
-  </vbox>
-
-  <hbox class="homepage-buttons">
-    <button id="useCurrent"
-            flex="1"
-            class="homepage-button"
-            label=""
-            accesskey="&useCurrentPage.accesskey;"
-            label1="&useCurrentPage.label;"
-            label2="&useMultiple.label;"
-            preference="pref.browser.homepage.disable_button.current_page"/>
-    <button id="useBookmark"
-            flex="1"
-            class="homepage-button"
-            label="&chooseBookmark.label;"
-            accesskey="&chooseBookmark.accesskey;"
-            preference="pref.browser.homepage.disable_button.bookmark_page"
-            searchkeywords="&selectBookmark.title; &selectBookmark.label;"/>
-    <button id="restoreDefaultHomePage"
-            flex="1"
-            class="homepage-button"
-            label="&restoreDefault.label;"
-            accesskey="&restoreDefault.accesskey;"
-            preference="pref.browser.homepage.disable_button.restore_default"/>
-  </hbox>
-</groupbox>
-
-<!-- Tab preferences -->
-<groupbox data-category="paneGeneral"
-          hidden="true">
-    <caption><label>&tabsGroup.label;</label></caption>
-
-    <checkbox id="ctrlTabRecentlyUsedOrder" label="&ctrlTabRecentlyUsedOrder.label;"
-              accesskey="&ctrlTabRecentlyUsedOrder.accesskey;"
-              preference="browser.ctrlTab.previews"/>
-
-    <checkbox id="linkTargeting" label="&newWindowsAsTabs.label;"
-              accesskey="&newWindowsAsTabs.accesskey;"
-              preference="browser.link.open_newwindow"
-              onsyncfrompreference="return gMainPane.readLinkTarget();"
-              onsynctopreference="return gMainPane.writeLinkTarget();"/>
-
-    <checkbox id="warnCloseMultiple" label="&warnOnCloseMultipleTabs.label;"
-              accesskey="&warnOnCloseMultipleTabs.accesskey;"
-              preference="browser.tabs.warnOnClose"/>
-
-    <checkbox id="warnOpenMany" label="&warnOnOpenManyTabs.label;"
-              accesskey="&warnOnOpenManyTabs.accesskey;"
-              preference="browser.tabs.warnOnOpen"/>
-
-    <checkbox id="switchToNewTabs" label="&switchLinksToNewTabs.label;"
-              accesskey="&switchLinksToNewTabs.accesskey;"
-              preference="browser.tabs.loadInBackground"/>
-
-#ifdef XP_WIN
-    <checkbox id="showTabsInTaskbar" label="&showTabsInTaskbar.label;"
-              accesskey="&showTabsInTaskbar.accesskey;"
-              preference="browser.taskbar.previews.enable"/>
-#endif
-
-    <hbox id="browserContainersbox" hidden="true" align="center">
-      <checkbox id="browserContainersCheckbox"
-                label="&browserContainersEnabled.label;"
-                accesskey="&browserContainersEnabled.accesskey;"
-                preference="privacy.userContext.enabled"
-                onsyncfrompreference="return gPrivacyPane.readBrowserContainersCheckbox();"/>
-      <label id="browserContainersLearnMore" class="learnMore text-link">
-        &browserContainersLearnMore.label;
-      </label>
-      <spacer flex="1"/>
-      <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-      <hbox>
-        <button id="browserContainersSettings"
-                class="accessory-button"
-                label="&browserContainersSettings.label;"
-                accesskey="&browserContainersSettings.accesskey;"
-                searchkeywords="&addButton.label;
-                                &preferencesButton.label;
-                                &removeButton.label;"/>
-      </hbox>
-    </hbox>
-</groupbox>
-
-<hbox id="languageAndAppearanceCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&languageAndAppearance.label;</label>
-</hbox>
-
-<!-- Fonts and Colors -->
-<groupbox id="fontsGroup" data-category="paneGeneral" hidden="true">
-  <caption><label>&fontsAndColors.label;</label></caption>
-
-  <vbox>
-    <hbox id="fontSettings">
-      <hbox align="center" flex="1">
-        <label control="defaultFont" accesskey="&defaultFont2.accesskey;">&defaultFont2.label;</label>
-        <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-        <hbox flex="1">
-          <menulist id="defaultFont" flex="1" delayprefsave="true" onsyncfrompreference="return FontBuilder.readFontSelection(this);"/>
-        </hbox>
-        <label id="defaultFontSizeLabel" control="defaultFontSize" accesskey="&defaultSize2.accesskey;">&defaultSize2.label;</label>
-        <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-        <hbox>
-          <menulist id="defaultFontSize" delayprefsave="true">
-            <menupopup>
-              <menuitem value="9" label="9"/>
-              <menuitem value="10" label="10"/>
-              <menuitem value="11" label="11"/>
-              <menuitem value="12" label="12"/>
-              <menuitem value="13" label="13"/>
-              <menuitem value="14" label="14"/>
-              <menuitem value="15" label="15"/>
-              <menuitem value="16" label="16"/>
-              <menuitem value="17" label="17"/>
-              <menuitem value="18" label="18"/>
-              <menuitem value="20" label="20"/>
-              <menuitem value="22" label="22"/>
-              <menuitem value="24" label="24"/>
-              <menuitem value="26" label="26"/>
-              <menuitem value="28" label="28"/>
-              <menuitem value="30" label="30"/>
-              <menuitem value="32" label="32"/>
-              <menuitem value="34" label="34"/>
-              <menuitem value="36" label="36"/>
-              <menuitem value="40" label="40"/>
-              <menuitem value="44" label="44"/>
-              <menuitem value="48" label="48"/>
-              <menuitem value="56" label="56"/>
-              <menuitem value="64" label="64"/>
-              <menuitem value="72" label="72"/>
-            </menupopup>
-          </menulist>
-        </hbox>
-      </hbox>
-      <spacer flex="1" />
-      <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-      <hbox>
-        <button id="advancedFonts"
-                class="accessory-button"
-                icon="select-font"
-                label="&advancedFonts.label;"
-                accesskey="&advancedFonts.accesskey;"
-                searchkeywords="&fontsDialog.title;
-                                &fonts.label;
-                                &size2.label;
-                                &proportional2.label;
-                                &serif2.label;
-                                &sans-serif2.label;
-                                &monospace2.label;
-                                &font.langGroup.latin;
-                                &font.langGroup.japanese;
-                                &font.langGroup.trad-chinese;
-                                &font.langGroup.simpl-chinese;
-                                &font.langGroup.trad-chinese-hk;
-                                &font.langGroup.korean;
-                                &font.langGroup.cyrillic;
-                                &font.langGroup.el;
-                                &font.langGroup.other;
-                                &font.langGroup.thai;
-                                &font.langGroup.hebrew;
-                                &font.langGroup.arabic;
-                                &font.langGroup.devanagari;
-                                &font.langGroup.tamil;
-                                &font.langGroup.armenian;
-                                &font.langGroup.bengali;
-                                &font.langGroup.canadian;
-                                &font.langGroup.ethiopic;
-                                &font.langGroup.georgian;
-                                &font.langGroup.gujarati;
-                                &font.langGroup.gurmukhi;
-                                &font.langGroup.khmer;
-                                &font.langGroup.malayalam;
-                                &font.langGroup.math;
-                                &font.langGroup.odia;
-                                &font.langGroup.telugu;
-                                &font.langGroup.kannada;
-                                &font.langGroup.sinhala;
-                                &font.langGroup.tibetan;
-                                &minSize2.label;
-                                &minSize.none;
-                                &useDefaultFontSerif.label;
-                                &useDefaultFontSansSerif.label;
-                                &allowPagesToUseOwn.label;
-                                &languages.customize.Fallback2.grouplabel;
-                                &languages.customize.Fallback3.label;
-                                &languages.customize.Fallback2.desc;
-                                &languages.customize.Fallback.auto;
-                                &languages.customize.Fallback.arabic;
-                                &languages.customize.Fallback.baltic;
-                                &languages.customize.Fallback.ceiso;
-                                &languages.customize.Fallback.cewindows;
-                                &languages.customize.Fallback.simplified;
-                                &languages.customize.Fallback.traditional;
-                                &languages.customize.Fallback.cyrillic;
-                                &languages.customize.Fallback.greek;
-                                &languages.customize.Fallback.hebrew;
-                                &languages.customize.Fallback.japanese;
-                                &languages.customize.Fallback.korean;
-                                &languages.customize.Fallback.thai;
-                                &languages.customize.Fallback.turkish;
-                                &languages.customize.Fallback.vietnamese;
-                                &languages.customize.Fallback.other;"/>
-      </hbox>
-    </hbox>
-    <hbox id="colorsSettings">
-      <spacer flex="1" />
-      <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-      <hbox>
-        <button id="colors"
-                class="accessory-button"
-                icon="select-color"
-                label="&colors.label;"
-                accesskey="&colors.accesskey;"
-                searchkeywords="&overrideDefaultPageColors.label;
-                                &overrideDefaultPageColors.always.label;
-                                &overrideDefaultPageColors.auto.label;
-                                &overrideDefaultPageColors.never.label;
-                                &color;
-                                &textColor2.label;
-                                &backgroundColor2.label;
-                                &useSystemColors.label;
-                                &underlineLinks.label;
-                                &linkColor2.label;
-                                &visitedLinkColor2.label;"/>
-      </hbox>
-    </hbox>
-  </vbox>
-</groupbox>
-
-<!-- Languages -->
-<groupbox id="languagesGroup" data-category="paneGeneral" hidden="true">
-  <caption><label>&language2.label;</label></caption>
-
-  <hbox id="languagesBox" align="center">
-    <description flex="1" control="chooseLanguage">&chooseLanguage.label;</description>
-    <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-    <hbox>
-      <button id="chooseLanguage"
-              class="accessory-button"
-              label="&chooseButton.label;"
-              accesskey="&chooseButton.accesskey;"
-              searchkeywords="&languages.customize.Header;
-                              &languages.customize2.description;
-                              &languages.customize.moveUp.label;
-                              &languages.customize.moveDown.label;
-                              &languages.customize.deleteButton.label;
-                              &languages.customize.selectLanguage.label;
-                              &languages.customize.addButton.label;"/>
-    </hbox>
-  </hbox>
-
-  <hbox id="translationBox" hidden="true">
-    <hbox align="center" flex="1">
-      <checkbox id="translate" preference="browser.translation.detectLanguage"
-                label="&translateWebPages.label;." accesskey="&translateWebPages.accesskey;"
-                onsyncfrompreference="return gMainPane.updateButtons('translateButton',
-                                              'browser.translation.detectLanguage');"/>
-      <hbox id="bingAttribution" hidden="true">
-        <label>&translation.options.attribution.beforeLogo;</label>
-        <separator orient="vertical" class="thin"/>
-        <image id="translationAttributionImage" aria-label="Microsoft Translator"
-               src="chrome://browser/content/microsoft-translator-attribution.png"/>
-        <separator orient="vertical" class="thin"/>
-        <label>&translation.options.attribution.afterLogo;</label>
-      </hbox>
-    </hbox>
-    <button id="translateButton"
-            class="accessory-button"
-            label="&translateExceptions.label;"
-            accesskey="&translateExceptions.accesskey;"/>
-  </hbox>
-  <checkbox id="checkSpelling"
-          label="&checkUserSpelling.label;"
-          accesskey="&checkUserSpelling.accesskey;"
-          onsyncfrompreference="return gMainPane.readCheckSpelling();"
-          onsynctopreference="return gMainPane.writeCheckSpelling();"
-          preference="layout.spellcheckDefault"/>
-</groupbox>
-
-<!-- Files and Applications -->
-<hbox id="filesAndApplicationsCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&filesAndApplications.label;</label>
-</hbox>
-
-<!--Downloads-->
-<groupbox id="downloadsGroup" data-category="paneGeneral" hidden="true">
-  <caption><label>&downloads.label;</label></caption>
-
-  <radiogroup id="saveWhere"
-              preference="browser.download.useDownloadDir"
-              onsyncfrompreference="return gMainPane.readUseDownloadDir();">
-    <hbox id="saveToRow">
-      <radio id="saveTo"
-            value="true"
-            label="&saveTo.label;"
-            accesskey="&saveTo.accesskey;"
-            aria-labelledby="saveTo downloadFolder"/>
-      <filefield id="downloadFolder"
-                flex="1"
-                preference="browser.download.folderList"
-                preference-editable="true"
-                aria-labelledby="saveTo"
-                onsyncfrompreference="return gMainPane.displayDownloadDirPref();"/>
-      <button id="chooseFolder"
-#ifdef XP_MACOSX
-              accesskey="&chooseFolderMac.accesskey;"
-              label="&chooseFolderMac.label;"
-#else
-              accesskey="&chooseFolderWin.accesskey;"
-              label="&chooseFolderWin.label;"
-#endif
-      />
-    </hbox>
-    <!-- Additional radio button added to support CloudStorage - Bug 1357171 -->
-    <radio id="saveToCloud"
-          value="true"
-          hidden="true"/>
-    <radio id="alwaysAsk"
-          value="false"
-          label="&alwaysAskWhere.label;"
-          accesskey="&alwaysAskWhere.accesskey;"/>
-  </radiogroup>
-</groupbox>
-
-<groupbox id="applicationsGroup" data-category="paneGeneral" hidden="true">
-  <caption><label>&applications.label;</label></caption>
-  <description>&applications.description;</description>
-  <textbox id="filter" flex="1"
-           type="search"
-           placeholder="&filter2.emptytext;"
-           aria-controls="handlersView"/>
-
-  <richlistbox id="handlersView" orient="vertical" persist="lastSelectedType"
-               preference="pref.downloads.disable_button.edit_actions"
-               flex="1">
-    <listheader equalsize="always">
-        <treecol id="typeColumn" label="&typeColumn.label;" value="type"
-                 accesskey="&typeColumn.accesskey;" persist="sortDirection"
-                 flex="1" sortDirection="ascending"/>
-        <treecol id="actionColumn" label="&actionColumn2.label;" value="action"
-                 accesskey="&actionColumn2.accesskey;" persist="sortDirection"
-                 flex="1"/>
-    </listheader>
-  </richlistbox>
-</groupbox>
-
-
-<!-- DRM Content -->
-<groupbox id="drmGroup" data-category="paneGeneral" data-subcategory="drm" hidden="true">
-  <caption><label>&drmContent2.label;</label></caption>
-  <grid id="contentGrid2">
-    <columns>
-      <column flex="1"/>
-      <column/>
-    </columns>
-    <rows id="contentRows-2">
-      <row id="playDRMContentRow">
-        <hbox align="center">
-          <checkbox id="playDRMContent" preference="media.eme.enabled"
-                    label="&playDRMContent2.label;" accesskey="&playDRMContent2.accesskey;"/>
-          <label id="playDRMContentLink" class="learnMore text-link">
-            &playDRMContent.learnMore.label;
-          </label>
-        </hbox>
-      </row>
-    </rows>
-  </grid>
-</groupbox>
-
-#ifdef HAVE_SHELL_SERVICE
-  <stringbundle id="bundleShell" src="chrome://browser/locale/shellservice.properties"/>
-  <stringbundle id="bundleBrand" src="chrome://branding/locale/brand.properties"/>
-#endif
-
-<hbox id="updatesCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&updateApplication.label;</label>
-</hbox>
-
-<!-- Update -->
-<groupbox id="updateApp" data-category="paneGeneral" hidden="true">
-  <caption class="search-header" hidden="true"><label>&updateApplication.label;</label></caption>
-
-  <label>&updateApplicationDescription.label;</label>
-  <hbox align="start">
-    <vbox flex="1">
-      <description>
-        &updateApplication.version.pre;<label id="version"/>&updateApplication.version.post;
-        <label id="releasenotes" class="learnMore text-link" hidden="true">&releaseNotes.link;</label>
-      </description>
-      <description id="distribution" class="text-blurb" hidden="true"/>
-      <description id="distributionId" class="text-blurb" hidden="true"/>
-    </vbox>
-#ifdef MOZ_UPDATER
-    <spacer flex="1"/>
-    <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-    <vbox>
-      <button id="showUpdateHistory"
-              class="accessory-button"
-              label="&updateHistory2.label;"
-              accesskey="&updateHistory2.accesskey;"
-              preference="app.update.disable_button.showUpdateHistory"
-              searchkeywords="&history.title; &history2.intro;"/>
-    </vbox>
-#endif
-  </hbox>
-#ifdef MOZ_UPDATER
-  <vbox id="updateBox">
-    <deck id="updateDeck" orient="vertical">
-      <hbox id="checkForUpdates" align="start">
-        <spacer flex="1"/>
-        <button id="checkForUpdatesButton"
-                label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                oncommand="gAppUpdater.checkForUpdates();"/>
-      </hbox>
-      <hbox id="downloadAndInstall" align="start">
-        <spacer flex="1"/>
-        <button id="downloadAndInstallButton"
-                oncommand="gAppUpdater.startDownload();"/>
-                <!-- label and accesskey will be filled by JS -->
-      </hbox>
-      <hbox id="apply" align="start">
-        <spacer flex="1"/>
-        <button id="updateButton"
-                label="&update.updateButton.label3;"
-                accesskey="&update.updateButton.accesskey;"
-                oncommand="gAppUpdater.buttonRestartAfterDownload();"/>
-      </hbox>
-      <hbox id="checkingForUpdates" align="start">
-        <image class="update-throbber"/><label>&update.checkingForUpdates;</label>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-      <hbox id="downloading" align="start">
-        <image class="update-throbber"/><label>&update.downloading.start;</label><label id="downloadStatus"/><label>&update.downloading.end;</label>
-      </hbox>
-      <hbox id="applying" align="start">
-        <image class="update-throbber"/><label>&update.applying;</label>
-      </hbox>
-      <hbox id="downloadFailed" align="start">
-        <label>&update.failed.start;</label><label id="failedLink" class="text-link">&update.failed.linkText;</label><label>&update.failed.end;</label>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                oncommand="gAppUpdater.checkForUpdates();"/>
-      </hbox>
-      <hbox id="adminDisabled" align="start">
-        <label>&update.adminDisabled;</label>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-      <hbox id="noUpdatesFound" align="start">
-        <image class="face-smile"/>
-        <label>&update.noUpdatesFound;</label>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                oncommand="gAppUpdater.checkForUpdates();"/>
-      </hbox>
-      <hbox id="otherInstanceHandlingUpdates" align="start">
-        <label>&update.otherInstanceHandlingUpdates;</label>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-      <hbox id="manualUpdate" align="start">
-        <image class="face-sad"/>
-        <description flex="1">
-          <label>&update.manual.start;</label><label id="manualLink" class="text-link"/><label>&update.manual.end;</label>
-        </description>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-      <hbox id="unsupportedSystem" align="start">
-        <description flex="1">
-          <label>&update.unsupported.start;</label><label id="unsupportedLink" class="learnMore text-link">&update.unsupported.linkText;</label><label>&update.unsupported.end;</label>
-        </description>
-        <spacer flex="1"/>
-        <button label="&update.checkForUpdatesButton.label;"
-                accesskey="&update.checkForUpdatesButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-      <hbox id="restarting" align="start">
-        <image class="update-throbber"/><label>&update.restarting;</label>
-        <spacer flex="1"/>
-        <button label="&update.updateButton.label3;"
-                accesskey="&update.updateButton.accesskey;"
-                disabled="true"/>
-      </hbox>
-    </deck>
-  </vbox>
-#endif
-
-#ifdef MOZ_UPDATER
-  <description>&updateApplication.description;</description>
-  <radiogroup id="updateRadioGroup">
-    <radio id="autoDesktop"
-           value="auto"
-           label="&updateAuto3.label;"
-           accesskey="&updateAuto3.accesskey;"/>
-    <radio value="checkOnly"
-          label="&updateCheckChoose2.label;"
-          accesskey="&updateCheckChoose2.accesskey;"/>
-    <radio value="manual"
-          label="&updateManual2.label;"
-          accesskey="&updateManual2.accesskey;"/>
-  </radiogroup>
-#ifdef MOZ_MAINTENANCE_SERVICE
-  <checkbox id="useService"
-            label="&useService.label;"
-            accesskey="&useService.accesskey;"
-            preference="app.update.service.enabled"/>
-#endif
-#endif
-  <checkbox id="enableSearchUpdate"
-            label="&enableSearchUpdate2.label;"
-            accesskey="&enableSearchUpdate2.accesskey;"
-            preference="browser.search.update"/>
-</groupbox>
-
-<hbox id="performanceCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&performance.label;</label>
-</hbox>
-
-<!-- Performance -->
-<groupbox id="performanceGroup" data-category="paneGeneral" hidden="true">
-  <caption class="search-header" hidden="true"><label>&performance.label;</label></caption>
-
-  <hbox align="center">
-    <checkbox id="useRecommendedPerformanceSettings"
-              label="&useRecommendedPerformanceSettings2.label;"
-              accesskey="&useRecommendedPerformanceSettings2.accesskey;"
-              preference="browser.preferences.defaultPerformanceSettings.enabled"/>
-    <label id="performanceSettingsLearnMore" class="learnMore text-link">&performanceSettingsLearnMore.label;</label>
-  </hbox>
-  <description class="indent">&useRecommendedPerformanceSettings2.description;</description>
-
-  <vbox id="performanceSettings" class="indent" hidden="true">
-    <checkbox id="allowHWAccel"
-              label="&allowHWAccel.label;"
-              accesskey="&allowHWAccel.accesskey;"
-              preference="layers.acceleration.disabled"/>
-    <hbox align="center">
-      <label id="limitContentProcess" accesskey="&limitContentProcessOption.accesskey;" control="contentProcessCount">&limitContentProcessOption.label;</label>
-      <menulist id="contentProcessCount" preference="dom.ipc.processCount">
-        <menupopup>
-          <menuitem label="1" value="1"/>
-          <menuitem label="2" value="2"/>
-          <menuitem label="3" value="3"/>
-          <menuitem label="4" value="4"/>
-          <menuitem label="5" value="5"/>
-          <menuitem label="6" value="6"/>
-          <menuitem label="7" value="7"/>
-        </menupopup>
-      </menulist>
-    </hbox>
-    <description id="contentProcessCountEnabledDescription">&limitContentProcessOption.description;</description>
-    <description id="contentProcessCountDisabledDescription">&limitContentProcessOption.disabledDescription;<label class="text-link" href="https://wiki.mozilla.org/Electrolysis">&limitContentProcessOption.disabledDescriptionLink;</label></description>
-  </vbox>
-</groupbox>
-
-<hbox id="browsingCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&browsing.label;</label>
-</hbox>
-
-<!-- Browsing -->
-<groupbox id="browsingGroup" data-category="paneGeneral" hidden="true">
-  <caption class="search-header" hidden="true"><label>&browsing.label;</label></caption>
-
-  <checkbox id="useAutoScroll"
-            label="&useAutoScroll.label;"
-            accesskey="&useAutoScroll.accesskey;"
-            preference="general.autoScroll"/>
-  <checkbox id="useSmoothScrolling"
-            label="&useSmoothScrolling.label;"
-            accesskey="&useSmoothScrolling.accesskey;"
-            preference="general.smoothScroll"/>
-
-#ifdef XP_WIN
-  <checkbox id="useOnScreenKeyboard"
-            hidden="true"
-            label="&useOnScreenKeyboard.label;"
-            accesskey="&useOnScreenKeyboard.accesskey;"
-            preference="ui.osk.enabled"/>
-#endif
-  <checkbox id="useCursorNavigation"
-            label="&useCursorNavigation.label;"
-            accesskey="&useCursorNavigation.accesskey;"
-            preference="accessibility.browsewithcaret"/>
-  <checkbox id="searchStartTyping"
-            label="&searchOnStartTyping.label;"
-            accesskey="&searchOnStartTyping.accesskey;"
-            preference="accessibility.typeaheadfind"/>
-</groupbox>
-
-<hbox id="networkProxyCategory"
-      class="subcategory"
-      hidden="true"
-      data-category="paneGeneral">
-  <label class="header-name" flex="1">&networkProxy.label;</label>
-</hbox>
-
-<!-- Network Proxy-->
-<groupbox id="connectionGroup" data-category="paneGeneral" hidden="true">
-  <caption class="search-header" hidden="true"><label>&networkProxy.label;</label></caption>
-
-  <hbox align="center">
-    <description flex="1" control="connectionSettings">&connectionDesc.label;</description>
-    <!-- Please don't remove the wrapping hbox/vbox/box for these elements. It's used to properly compute the search tooltip position. -->
-    <hbox>
-      <button id="connectionSettings"
-              class="accessory-button"
-              icon="network"
-              label="&connectionSettings.label;"
-              accesskey="&connectionSettings.accesskey;"
-              searchkeywords="&connectionsDialog.title;
-                              &noProxyTypeRadio.label;
-                              &WPADTypeRadio.label;
-                              &systemTypeRadio.label;
-                              &manualTypeRadio2.label;
-                              &http2.label;
-                              &ssl2.label;
-                              &ftp2.label;
-                              &port2.label;
-                              &socks2.label;
-                              &socks4.label;
-                              &socks5.label;
-                              &noproxy2.label;
-                              &noproxyExplain.label;
-                              &shareproxy.label;
-                              &autoTypeRadio2.label;
-                              &reload.label;
-                              &autologinproxy.label;
-                              &socksRemoteDNS.label2;"/>
-    </hbox>
-  </hbox>
-</groupbox>
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/moz.build
+++ /dev/null
@@ -1,13 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# vim: set filetype=python:
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-for var in ('MOZ_APP_NAME', 'MOZ_MACBUNDLE_NAME'):
-    DEFINES[var] = CONFIG[var]
-
-if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('windows', 'gtk2', 'gtk3', 'cocoa'):
-    DEFINES['HAVE_SHELL_SERVICE'] = 1
-
-JAR_MANIFESTS += ['jar.mn']
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/preferences.js
+++ /dev/null
@@ -1,363 +0,0 @@
-/* - This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
-   - You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// Import globals from the files imported by the .xul files.
-/* import-globals-from subdialogs.js */
-/* import-globals-from main.js */
-/* import-globals-from search.js */
-/* import-globals-from containers.js */
-/* import-globals-from privacy.js */
-/* import-globals-from sync.js */
-/* import-globals-from findInPage.js */
-/* import-globals-from ../../../base/content/utilityOverlay.js */
-
-"use strict";
-
-var Cc = Components.classes;
-var Ci = Components.interfaces;
-var Cu = Components.utils;
-var Cr = Components.results;
-
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/AppConstants.jsm");
-
-var gLastHash = "";
-
-var gCategoryInits = new Map();
-function init_category_if_required(category) {
-  let categoryInfo = gCategoryInits.get(category);
-  if (!categoryInfo) {
-    throw "Unknown in-content prefs category! Can't init " + category;
-  }
-  if (categoryInfo.inited) {
-    return;
-  }
-  categoryInfo.init();
-}
-
-function register_module(categoryName, categoryObject) {
-  gCategoryInits.set(categoryName, {
-    inited: false,
-    init() {
-      categoryObject.init();
-      this.inited = true;
-    }
-  });
-}
-
-document.addEventListener("DOMContentLoaded", init_all, {once: true});
-
-function init_all() {
-  document.documentElement.instantApply = true;
-
-  gSubDialog.init();
-  register_module("paneGeneral", gMainPane);
-  register_module("paneSearch", gSearchPane);
-  register_module("panePrivacy", gPrivacyPane);
-  register_module("paneContainers", gContainersPane);
-  register_module("paneSync", gSyncPane);
-  register_module("paneSearchResults", gSearchResultsPane);
-  gSearchResultsPane.init();
-
-  let categories = document.getElementById("categories");
-  categories.addEventListener("select", event => gotoPref(event.target.value));
-
-  document.documentElement.addEventListener("keydown", function(event) {
-    if (event.keyCode == KeyEvent.DOM_VK_TAB) {
-      categories.setAttribute("keyboard-navigation", "true");
-    }
-  });
-  categories.addEventListener("mousedown", function() {
-    this.removeAttribute("keyboard-navigation");
-  });
-
-  window.addEventListener("hashchange", onHashChange);
-  gotoPref();
-
-  init_dynamic_padding();
-
-  var initFinished = new CustomEvent("Initialized", {
-    "bubbles": true,
-    "cancelable": true
-  });
-  document.dispatchEvent(initFinished);
-
-  let helpButton = document.querySelector(".help-button");
-  let helpUrl = Services.urlFormatter.formatURLPref("app.support.baseURL") + "preferences";
-  helpButton.setAttribute("href", helpUrl);
-
-  // Wait until initialization of all preferences are complete before
-  // notifying observers that the UI is now ready.
-  Services.obs.notifyObservers(window, "advanced-pane-loaded");
-}
-
-// Make the space above the categories list shrink on low window heights
-function init_dynamic_padding() {
-  let categories = document.getElementById("categories");
-  let catPadding = Number.parseInt(getComputedStyle(categories)
-                                     .getPropertyValue("padding-top"));
-  let helpButton = document.querySelector(".help-button");
-  let helpButtonCS = getComputedStyle(helpButton);
-  let helpHeight = Number.parseInt(helpButtonCS.height);
-  let helpBottom = Number.parseInt(helpButtonCS.bottom);
-  // Reduce the padding to account for less space, but due
-  // to bug 1357841, the status panel will overlap the link.
-  const reducedHelpButtonBottomFactor = .75;
-  let reducedHelpButtonBottom = helpBottom * reducedHelpButtonBottomFactor;
-  let fullHelpHeight = helpHeight + reducedHelpButtonBottom;
-  let fullHeight = categories.lastElementChild.getBoundingClientRect().bottom +
-                   fullHelpHeight;
-  let mediaRule = `
-  @media (max-height: ${fullHeight}px) {
-    #categories {
-      padding-top: calc(100vh - ${fullHeight - catPadding}px);
-      padding-bottom: ${fullHelpHeight}px;
-    }
-    .help-button {
-      bottom: ${reducedHelpButtonBottom / 2}px;
-    }
-  }
-  `;
-  let mediaStyle = document.createElementNS("http://www.w3.org/1999/xhtml", "html:style");
-  mediaStyle.setAttribute("type", "text/css");
-  mediaStyle.appendChild(document.createCDATASection(mediaRule));
-  document.documentElement.appendChild(mediaStyle);
-}
-
-function telemetryBucketForCategory(category) {
-  category = category.toLowerCase();
-  switch (category) {
-    case "containers":
-    case "general":
-    case "privacy":
-    case "search":
-    case "sync":
-    case "searchresults":
-      return category;
-    default:
-      return "unknown";
-  }
-}
-
-function onHashChange() {
-  gotoPref();
-}
-
-function gotoPref(aCategory) {
-  let categories = document.getElementById("categories");
-  const kDefaultCategoryInternalName = "paneGeneral";
-  const kDefaultCategory = "general";
-  let hash = document.location.hash;
-
-  let category = aCategory || hash.substr(1) || kDefaultCategoryInternalName;
-  let breakIndex = category.indexOf("-");
-  // Subcategories allow for selecting smaller sections of the preferences
-  // until proper search support is enabled (bug 1353954).
-  let subcategory = breakIndex != -1 && category.substring(breakIndex + 1);
-  if (subcategory) {
-    category = category.substring(0, breakIndex);
-  }
-  category = friendlyPrefCategoryNameToInternalName(category);
-  if (category != "paneSearchResults") {
-    gSearchResultsPane.searchInput.value = "";
-    gSearchResultsPane.getFindSelection(window).removeAllRanges();
-    gSearchResultsPane.removeAllSearchTooltips();
-    gSearchResultsPane.removeAllSearchMenuitemIndicators();
-  } else if (!gSearchResultsPane.searchInput.value) {
-    // Something tried to send us to the search results pane without
-    // a query string. Default to the General pane instead.
-    category = kDefaultCategoryInternalName;
-    document.location.hash = kDefaultCategory;
-    gSearchResultsPane.query = null;
-  }
-
-  // Updating the hash (below) or changing the selected category
-  // will re-enter gotoPref.
-  if (gLastHash == category && !subcategory)
-    return;
-
-  let item;
-  if (category != "paneSearchResults") {
-    item = categories.querySelector(".category[value=" + category + "]");
-    if (!item) {
-      category = kDefaultCategoryInternalName;
-      item = categories.querySelector(".category[value=" + category + "]");
-    }
-  }
-
-  try {
-    init_category_if_required(category);
-  } catch (ex) {
-    Cu.reportError("Error initializing preference category " + category + ": " + ex);
-    throw ex;
-  }
-
-  let friendlyName = internalPrefCategoryNameToFriendlyName(category);
-  if (gLastHash || category != kDefaultCategoryInternalName || subcategory) {
-    document.location.hash = friendlyName;
-  }
-  // Need to set the gLastHash before setting categories.selectedItem since
-  // the categories 'select' event will re-enter the gotoPref codepath.
-  gLastHash = category;
-  if (item) {
-    categories.selectedItem = item;
-  } else {
-    categories.clearSelection();
-  }
-  window.history.replaceState(category, document.title);
-  search(category, "data-category", subcategory, "data-subcategory");
-
-  let mainContent = document.querySelector(".main-content");
-  mainContent.scrollTop = 0;
-
-  Services.telemetry
-          .getHistogramById("FX_PREFERENCES_CATEGORY_OPENED_V2")
-          .add(telemetryBucketForCategory(friendlyName));
-}
-
-function search(aQuery, aAttribute, aSubquery, aSubAttribute) {
-  let mainPrefPane = document.getElementById("mainPrefPane");
-  let elements = mainPrefPane.children;
-  for (let element of elements) {
-    // If the "data-hidden-from-search" is "true", the
-    // element will not get considered during search. This
-    // should only be used when an element is still under
-    // development and should not be shown for any reason.
-    if (element.getAttribute("data-hidden-from-search") != "true" ||
-        element.getAttribute("data-subpanel") == "true") {
-      let attributeValue = element.getAttribute(aAttribute);
-      if (attributeValue == aQuery) {
-        if (!element.classList.contains("header") &&
-            element.localName !== "preferences" &&
-            aSubquery && aSubAttribute) {
-          let subAttributeValue = element.getAttribute(aSubAttribute);
-          element.hidden = subAttributeValue != aSubquery;
-        } else {
-          element.hidden = false;
-        }
-      } else {
-        element.hidden = true;
-      }
-    }
-    element.classList.remove("visually-hidden");
-  }
-
-  let keysets = mainPrefPane.getElementsByTagName("keyset");
-  for (let element of keysets) {
-    let attributeValue = element.getAttribute(aAttribute);
-    if (attributeValue == aQuery)
-      element.removeAttribute("disabled");
-    else
-      element.setAttribute("disabled", true);
-  }
-}
-
-function helpButtonCommand() {
-  let pane = history.state;
-  let categories = document.getElementById("categories");
-  let helpTopic = categories.querySelector(".category[value=" + pane + "]")
-                            .getAttribute("helpTopic");
-  openHelpLink(helpTopic);
-}
-
-function friendlyPrefCategoryNameToInternalName(aName) {
-  if (aName.startsWith("pane"))
-    return aName;
-  return "pane" + aName.substring(0, 1).toUpperCase() + aName.substr(1);
-}
-
-// This function is duplicated inside of utilityOverlay.js's openPreferences.
-function internalPrefCategoryNameToFriendlyName(aName) {
-  return (aName || "").replace(/^pane./, function(toReplace) { return toReplace[4].toLowerCase(); });
-}
-
-// Put up a confirm dialog with "ok to restart", "revert without restarting"
-// and "restart later" buttons and returns the index of the button chosen.
-// We can choose not to display the "restart later", or "revert" buttons,
-// altough the later still lets us revert by using the escape key.
-//
-// The constants are useful to interpret the return value of the function.
-const CONFIRM_RESTART_PROMPT_RESTART_NOW = 0;
-const CONFIRM_RESTART_PROMPT_CANCEL = 1;
-const CONFIRM_RESTART_PROMPT_RESTART_LATER = 2;
-function confirmRestartPrompt(aRestartToEnable, aDefaultButtonIndex,
-                              aWantRevertAsCancelButton,
-                              aWantRestartLaterButton) {
-  let brandName = document.getElementById("bundleBrand").getString("brandShortName");
-  let bundle = document.getElementById("bundlePreferences");
-  let msg = bundle.getFormattedString(aRestartToEnable ?
-                                      "featureEnableRequiresRestart" :
-                                      "featureDisableRequiresRestart",
-                                      [brandName]);
-  let title = bundle.getFormattedString("shouldRestartTitle", [brandName]);
-  let prompts = Cc["@mozilla.org/embedcomp/prompt-service;1"].getService(Ci.nsIPromptService);
-
-  // Set up the first (index 0) button:
-  let button0Text = bundle.getFormattedString("okToRestartButton", [brandName]);
-  let buttonFlags = (Services.prompt.BUTTON_POS_0 *
-                     Services.prompt.BUTTON_TITLE_IS_STRING);
-
-
-  // Set up the second (index 1) button:
-  let button1Text = null;
-  if (aWantRevertAsCancelButton) {
-    button1Text = bundle.getString("revertNoRestartButton");
-    buttonFlags += (Services.prompt.BUTTON_POS_1 *
-                    Services.prompt.BUTTON_TITLE_IS_STRING);
-  } else {
-    buttonFlags += (Services.prompt.BUTTON_POS_1 *
-                    Services.prompt.BUTTON_TITLE_CANCEL);
-  }
-
-  // Set up the third (index 2) button:
-  let button2Text = null;
-  if (aWantRestartLaterButton) {
-    button2Text = bundle.getString("restartLater");
-    buttonFlags += (Services.prompt.BUTTON_POS_2 *
-                    Services.prompt.BUTTON_TITLE_IS_STRING);
-  }
-
-  switch (aDefaultButtonIndex) {
-    case 0:
-      buttonFlags += Services.prompt.BUTTON_POS_0_DEFAULT;
-      break;
-    case 1:
-      buttonFlags += Services.prompt.BUTTON_POS_1_DEFAULT;
-      break;
-    case 2:
-      buttonFlags += Services.prompt.BUTTON_POS_2_DEFAULT;
-      break;
-    default:
-      break;
-  }
-
-  let buttonIndex = prompts.confirmEx(window, title, msg, buttonFlags,
-                                      button0Text, button1Text, button2Text,
-                                      null, {});
-
-  // If we have the second confirmation dialog for restart, see if the user
-  // cancels out at that point.
-  if (buttonIndex == CONFIRM_RESTART_PROMPT_RESTART_NOW) {
-    let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"]
-                       .createInstance(Ci.nsISupportsPRBool);
-    Services.obs.notifyObservers(cancelQuit, "quit-application-requested",
-                                  "restart");
-    if (cancelQuit.data) {
-      buttonIndex = CONFIRM_RESTART_PROMPT_CANCEL;
-    }
-  }
-  return buttonIndex;
-}
-
-// This function is used to append search keywords found
-// in the related subdialog to the button that will activate the subdialog.
-function appendSearchKeywords(aId, keywords) {
-  let element = document.getElementById(aId);
-  let searchKeywords = element.getAttribute("searchkeywords");
-  if (searchKeywords) {
-    keywords.push(searchKeywords);
-  }
-  element.setAttribute("searchkeywords", keywords.join(" "));
-}
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/preferences.xul
+++ /dev/null
@@ -1,215 +0,0 @@
-<?xml version="1.0"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
-   - You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<?xml-stylesheet href="chrome://global/skin/global.css"?>
-
-<?xml-stylesheet href="chrome://browser/skin/preferences/preferences.css"?>
-<?xml-stylesheet href="chrome://global/skin/in-content/common.css"?>
-<?xml-stylesheet
-  href="chrome://browser/skin/preferences/in-content-new/preferences.css"?>
-<?xml-stylesheet
-  href="chrome://browser/content/preferences/handlers.css"?>
-<?xml-stylesheet href="chrome://browser/skin/preferences/applications.css"?>
-<?xml-stylesheet href="chrome://browser/skin/preferences/in-content-new/search.css"?>
-<?xml-stylesheet href="chrome://browser/skin/preferences/in-content-new/containers.css"?>
-<?xml-stylesheet href="chrome://browser/skin/preferences/in-content-new/privacy.css"?>
-
-<!DOCTYPE page [
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd">
-<!ENTITY % globalPreferencesDTD SYSTEM "chrome://global/locale/preferences.dtd">
-<!ENTITY % preferencesDTD SYSTEM
-  "chrome://browser/locale/preferences/preferences.dtd">
-<!ENTITY % selectBookmarkDTD SYSTEM
-  "chrome://browser/locale/preferences/selectBookmark.dtd">
-<!ENTITY % languagesDTD SYSTEM "chrome://browser/locale/preferences/languages.dtd">
-<!ENTITY % fontDTD SYSTEM "chrome://browser/locale/preferences/fonts.dtd">
-<!ENTITY % colorsDTD SYSTEM "chrome://browser/locale/preferences/colors.dtd">
-<!ENTITY % permissionsDTD SYSTEM "chrome://browser/locale/preferences/permissions.dtd">
-<!ENTITY % passwordManagerDTD SYSTEM "chrome://passwordmgr/locale/passwordManager.dtd">
-<!ENTITY % historyDTD SYSTEM "chrome://mozapps/locale/update/history.dtd">
-<!ENTITY % certManagerDTD SYSTEM "chrome://pippki/locale/certManager.dtd">
-<!ENTITY % deviceManangerDTD SYSTEM "chrome://pippki/locale/deviceManager.dtd">
-<!ENTITY % connectionDTD SYSTEM "chrome://browser/locale/preferences/connection.dtd">
-<!ENTITY % siteDataSettingsDTD SYSTEM
-  "chrome://browser/locale/preferences/siteDataSettings.dtd" >
-<!ENTITY % privacyDTD SYSTEM "chrome://browser/locale/preferences/privacy.dtd">
-<!ENTITY % tabsDTD SYSTEM "chrome://browser/locale/preferences/tabs.dtd">
-<!ENTITY % searchDTD SYSTEM "chrome://browser/locale/preferences/search.dtd">
-<!ENTITY % syncBrandDTD SYSTEM "chrome://browser/locale/syncBrand.dtd">
-<!ENTITY % syncDTD SYSTEM "chrome://browser/locale/preferences/sync.dtd">
-<!ENTITY % securityDTD SYSTEM
-  "chrome://browser/locale/preferences/security.dtd">
-<!ENTITY % containersDTD SYSTEM
-  "chrome://browser/locale/preferences/containers.dtd">
-<!ENTITY % sanitizeDTD SYSTEM "chrome://browser/locale/sanitize.dtd">
-<!ENTITY % mainDTD SYSTEM "chrome://browser/locale/preferences/main.dtd">
-<!ENTITY % aboutHomeDTD SYSTEM "chrome://browser/locale/aboutHome.dtd">
-<!ENTITY % contentDTD SYSTEM "chrome://browser/locale/preferences/content.dtd">
-<!ENTITY % applicationsDTD SYSTEM
-  "chrome://browser/locale/preferences/applications.dtd">
-<!ENTITY % advancedDTD SYSTEM
-  "chrome://browser/locale/preferences/advanced.dtd">
-<!ENTITY % aboutDialogDTD SYSTEM "chrome://browser/locale/aboutDialog.dtd" >
-%aboutDialogDTD;
-%brandDTD;
-%globalPreferencesDTD;
-%preferencesDTD;
-%selectBookmarkDTD;
-%languagesDTD;
-%fontDTD;
-%colorsDTD;
-%permissionsDTD;
-%passwordManagerDTD;
-%historyDTD;
-%certManagerDTD;
-%deviceManangerDTD;
-%connectionDTD;
-%siteDataSettingsDTD;
-%privacyDTD;
-%tabsDTD;
-%searchDTD;
-%syncBrandDTD;
-%syncDTD;
-%securityDTD;
-%containersDTD;
-%sanitizeDTD;
-%mainDTD;
-%aboutHomeDTD;
-%contentDTD;
-%applicationsDTD;
-%advancedDTD;
-]>
-
-#ifdef XP_WIN
-#define USE_WIN_TITLE_STYLE
-#endif
-
-<page xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-      xmlns:html="http://www.w3.org/1999/xhtml"
-      disablefastfind="true"
-#ifdef USE_WIN_TITLE_STYLE
-      title="&prefWindow.titleWin;">
-#else
-      title="&prefWindow.title;">
-#endif
-
-  <html:link rel="shortcut icon"
-              href="chrome://browser/skin/settings.svg"/>
-
-  <script type="application/javascript"
-          src="chrome://browser/content/utilityOverlay.js"/>
-  <script type="application/javascript"
-          src="chrome://browser/content/preferences/in-content-new/preferences.js"/>
-  <script src="chrome://browser/content/preferences/in-content-new/findInPage.js"/>
-  <script src="chrome://browser/content/preferences/in-content-new/subdialogs.js"/>
-
-  <stringbundle id="bundleBrand"
-                src="chrome://branding/locale/brand.properties"/>
-  <stringbundle id="bundlePreferences"
-                src="chrome://browser/locale/preferences/preferences.properties"/>
-  <stringbundle id="pkiBundle"
-                src="chrome://pippki/locale/pippki.properties"/>
-  <stringbundle id="browserBundle"
-                src="chrome://browser/locale/browser.properties"/>
-
-  <stringbundleset id="appManagerBundleset">
-    <stringbundle id="appManagerBundle"
-                  src="chrome://browser/locale/preferences/applicationManager.properties"/>
-  </stringbundleset>
-
-  <stack flex="1">
-  <hbox flex="1">
-
-    <!-- category list -->
-    <richlistbox id="categories">
-      <richlistitem id="category-general"
-                    class="category"
-                    value="paneGeneral"
-                    helpTopic="prefs-main"
-                    tooltiptext="&paneGeneral.title;"
-                    align="center">
-        <image class="category-icon"/>
-        <label class="category-name" flex="1">&paneGeneral.title;</label>
-      </richlistitem>
-
-      <richlistitem id="category-search"
-                    class="category"
-                    value="paneSearch"
-                    helpTopic="prefs-search"
-                    tooltiptext="&paneSearch.title;"
-                    align="center">
-        <image class="category-icon"/>
-        <label class="category-name" flex="1">&paneSearch.title;</label>
-      </richlistitem>
-
-      <richlistitem id="category-containers"
-                    class="category"
-                    value="paneContainers"
-                    helpTopic="prefs-containers"
-                    hidden="true"/>
-
-      <richlistitem id="category-privacy"
-                    class="category"
-                    value="panePrivacy"
-                    helpTopic="prefs-privacy"
-                    tooltiptext="&panePrivacySecurity.title;"
-                    align="center">
-        <image class="category-icon"/>
-        <label class="category-name" flex="1">&panePrivacySecurity.title;</label>
-      </richlistitem>
-
-      <richlistitem id="category-sync"
-                    class="category"
-                    value="paneSync"
-                    helpTopic="prefs-weave"
-                    tooltiptext="&paneSync1.title;"
-                    align="center">
-        <image class="category-icon"/>
-        <label class="category-name" flex="1">&paneSync1.title;</label>
-      </richlistitem>
-    </richlistbox>
-
-    <keyset>
-      <key key="&focusSearch1.key;" modifiers="accel" id="focusSearch1" oncommand="gSearchResultsPane.searchInput.focus();"/>
-    </keyset>
-
-    <html:a class="help-button" target="_blank" aria-label="&helpButton2.label;">&helpButton2.label;</html:a>
-
-    <vbox class="main-content" flex="1" align="start">
-      <vbox class="pane-container">
-        <hbox class="search-container" pack="end">
-          <textbox type="search" id="searchInput" hidden="true" clickSelectsAll="true"/>
-        </hbox>
-        <prefpane id="mainPrefPane">
-#include searchResults.xul
-#include main.xul
-#include search.xul
-#include privacy.xul
-#include containers.xul
-#include sync.xul
-        </prefpane>
-      </vbox>
-    </vbox>
-  </hbox>
-
-  <stack id="dialogStack" hidden="true"/>
-  <vbox id="dialogTemplate" class="dialogOverlay" align="center" pack="center" topmost="true" hidden="true">
-    <groupbox class="dialogBox"
-              orient="vertical"
-              pack="end"
-              role="dialog"
-              aria-labelledby="dialogTitle">
-      <caption flex="1" align="center">
-        <label class="dialogTitle" flex="1"></label>
-        <button class="dialogClose close-icon"
-                aria-label="&preferencesCloseButton.label;"/>
-      </caption>
-      <browser class="dialogFrame"
-               autoscroll="false"
-               disablehistory="true"/>
-    </groupbox>
-  </vbox>
-  </stack>
-</page>
deleted file mode 100644
--- a/browser/components/preferences/in-content-new/privacy.js
+++ /dev/null
@@ -1,1635 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* import-globals-from preferences.js */
-
-Components.utils.import("resource://gre/modules/AppConstants.jsm");
-Components.utils.import("resource://gre/modules/PluralForm.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
-                                  "resource://gre/modules/PluralForm.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "LoginHelper",
-                                  "resource://gre/modules/LoginHelper.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "SiteDataManager",
-                                  "resource:///modules/SiteDataManager.jsm");
-
-Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
-
-const PREF_UPLOAD_ENABLED = "datareporting.healthreport.uploadEnabled";
-
-XPCOMUtils.defineLazyGetter(this, "AlertsServiceDND", function() {
-  try {
-    let alertsService = Cc["@mozilla.org/alerts-service;1"]
-                          .getService(Ci.nsIAlertsService)
-                          .QueryInterface(Ci.nsIAlertsDoNotDisturb);
-    // This will throw if manualDoNotDisturb isn't implemented.
-    alertsService.manualDoNotDisturb;
-    return alertsService;
-  } catch (ex) {
-    return undefined;
-  }
-});
-
-var gPrivacyPane = {
-  _pane: null,
-
-  /**
-   * Whether the use has selected the auto-start private browsing mode in the UI.
-   */
-  _autoStartPrivateBrowsing: false,
-
-  /**
-   * Whether the prompt to restart Firefox should appear when changing the autostart pref.
-   */
-  _shouldPromptForRestart: true,
-
-  /**
-   * Show the Tracking Protection UI depending on the
-   * privacy.trackingprotection.ui.enabled pref, and linkify its Learn More link
-   */
-  _initTrackingProtection() {
-    if (!Services.prefs.getBoolPref("privacy.trackingprotection.ui.enabled")) {
-      return;
-    }
-
-    let link = document.getElementById("trackingProtectionLearnMore");
-    let url = Services.urlFormatter.formatURLPref("app.support.baseURL") + "tracking-protection";
-    link.setAttribute("href", url);
-
-    this.trackingProtectionReadPrefs();
-
-    document.getElementById("trackingProtectionExceptions").hidden = false;
-    document.getElementById("trackingProtectionBox").hidden = false;
-    document.getElementById("trackingProtectionPBMBox").hidden = true;
-  },
-
-  /**
-   * Linkify the Learn More link of the Private Browsing Mode Tracking
-   * Protection UI.
-   */
-  _initTrackingProtectionPBM() {
-    let link = document.getElementById("trackingProtectionPBMLearnMore");
-    let url = Services.urlFormatter.formatURLPref("app.support.baseURL") + "tracking-protection-pbm";
-    link.setAttribute("href", url);
-  },
-
-  /**
-   * Initialize autocomplete to ensure prefs are in sync.
-   */
-  _initAutocomplete() {
-    Components.classes["@mozilla.org/autocomplete/search;1?name=unifiedcomplete"]
-              .getService(Components.interfaces.mozIPlacesAutoComplete);
-  },
-
-  /**
-   * Sets up the UI for the number of days of history to keep, and updates the
-   * label of the "Clear Now..." button.
-   */
-  init() {
-    function setEventListener(aId, aEventType, aCallback) {
-      document.getElementById(aId)
-              .addEventListener(aEventType, aCallback.bind(gPrivacyPane));
-    }
-
-    this._updateSanitizeSettingsButton();
-    this.initializeHistoryMode();
-    this.updateHistoryModePane();
-    this.updatePrivacyMicroControls();
-    this.initAutoStartPrivateBrowsingReverter();
-    this._initTrackingProtection();
-    this._initTrackingProtectionPBM();
-    this._initAutocomplete();
-
-    setEventListener("privacy.sanitize.sanitizeOnShutdown", "change",
-                     gPrivacyPane._updateSanitizeSettingsButton);
-    setEventListener("browser.privatebrowsing.autostart", "change",
-                     gPrivacyPane.updatePrivacyMicroControls);
-    setEventListener("historyMode", "command", function() {
-      gPrivacyPane.updateHistoryModePane();
-      gPrivacyPane.updateHistoryModePrefs();
-      gPrivacyPane.updatePrivacyMicroControls();
-      gPrivacyPane.updateAutostart();
-    });
-    setEventListener("historyRememberClear", "click", function() {
-      gPrivacyPane.clearPrivateDataNow(false);
-      return false;
-    });
-    setEventListener("historyRememberCookies", "click", function() {
-      gPrivacyPane.showCookies();
-      return false;
-    });
-    setEventListener("historyDontRememberClear", "click", function() {
-      gPrivacyPane.clearPrivateDataNow(true);
-      return false;
-    });
-    setEventListener("privateBrowsingAutoStart", "command",
-                     gPrivacyPane.updateAutostart);
-    setEventListener("cookieExceptions", "command",
-                     gPrivacyPane.showCookieExceptions);
-    setEventListener("showCookiesButton", "command",
-                     gPrivacyPane.showCookies);
-    setEventListener("clearDataSettings", "command",
-                     gPrivacyPane.showClearPrivateDataSettings);
-    setEventListener("trackingProtectionRadioGroup", "command",
-                     gPrivacyPane.trackingProtectionWritePrefs);
-    setEventListener("trackingProtectionExceptions", "command",
-                     gPrivacyPane.showTrackingProtectionExceptions);
-    setEventListener("changeBlockList", "command",
-                     gPrivacyPane.showBlockLists);
-    setEventListener("passwordExceptions", "command",
-      gPrivacyPane.showPasswordExceptions);
-    setEventListener("useMasterPassword", "command",
-      gPrivacyPane.updateMasterPasswordButton);
-    setEventListener("changeMasterPassword", "command",
-      gPrivacyPane.changeMasterPassword);
-    setEventListener("showPasswords", "command",
-      gPrivacyPane.showPasswords);
-    setEventListener("addonExceptions", "command",
-      gPrivacyPane.showAddonExceptions);
-    setEventListener("viewCertificatesButton", "command",
-                     gPrivacyPane.showCertificates);
-    setEventListener("viewSecurityDevicesButton", "command",
-                     gPrivacyPane.showSecurityDevices);
-    setEventListener("clearCacheButton", "command",
-                     gPrivacyPane.clearCache);
-
-    this._pane = document.getElementById("panePrivacy");
-    this._initMasterPasswordUI();
-    this._initSafeBrowsing();
-    this.updateCacheSizeInputField();
-    this.updateActualCacheSize();
-
-    setEventListener("notificationSettingsButton", "command",
-      gPrivacyPane.showNotificationExceptions);
-    setEventListener("locationSettingsButton", "command",
-      gPrivacyPane.showLocationExceptions);
-    setEventListener("cameraSettingsButton", "command",
-      gPrivacyPane.showCameraExceptions);
-    setEventListener("microphoneSettingsButton", "command",
-      gPrivacyPane.showMicrophoneExceptions);
-    setEventListener("popupPolicyButton", "command",
-      gPrivacyPane.showPopupExceptions);
-    setEventListener("notificationsDoNotDisturb", "command",
-      gPrivacyPane.toggleDoNotDisturbNotifications);
-
-    if (AlertsServiceDND) {
-      let notificationsDoNotDisturbBox =
-        document.getElementById("notificationsDoNotDisturbBox");
-      notificationsDoNotDisturbBox.removeAttribute("hidden");
-      if (AlertsServiceDND.manualDoNotDisturb) {
-        let notificationsDoNotDisturb =
-          document.getElementById("notificationsDoNotDisturb");
-        notificationsDoNotDisturb.setAttribute("checked", true);
-      }
-    }
-
-    setEventListener("cacheSize", "change",
-                     gPrivacyPane.updateCacheSizePref);
-
-    if (Services.prefs.getBoolPref("browser.preferences.offlineGroup.enabled")) {
-      this.updateOfflineApps();
-      this.updateActualAppCacheSize();
-      setEventListener("offlineNotifyExceptions", "command",
-                       gPrivacyPane.showOfflineExceptions);
-      setEventListener("offlineAppsList", "select",
-                       gPrivacyPane.offlineAppSelected);
-      setEventListener("offlineAppsListRemove", "command",
-                       gPrivacyPane.removeOfflineApp);
-      setEventListener("clearOfflineAppCacheButton", "command",
-                       gPrivacyPane.clearOfflineAppCache);
-      let bundlePrefs = document.getElementById("bundlePreferences");
-      document.getElementById("offlineAppsList")
-              .style.height = bundlePrefs.getString("offlineAppsList.height");
-      let offlineGroup = document.getElementById("offlineGroup");
-      offlineGroup.removeAttribute("data-hidden-from-search");
-    }
-
-    if (Services.prefs.getBoolPref("browser.storageManager.enabled")) {
-      Services.obs.addObserver(this, "sitedatamanager:sites-updated");
-      Services.obs.addObserver(this, "sitedatamanager:updating-sites");
-      let unload = () => {
-        window.removeEventListener("unload", unload);
-        Services.obs.removeObserver(this, "sitedatamanager:sites-updated");
-        Services.obs.removeObserver(this, "sitedatamanager:updating-sites");
-      };
-      window.addEventListener("unload", unload);
-      SiteDataManager.updateSites();
-      setEventListener("clearSiteDataButton", "command",
-                       gPrivacyPane.clearSiteData);
-      setEventListener("siteDataSettings", "command",
-                       gPrivacyPane.showSiteDataSettings);
-      let url = Services.urlFormatter.formatURLPref("app.support.baseURL") + "storage-permissions";
-      document.getElementById("siteDataLearnMoreLink").setAttribute("href", url);
-      let siteDataGroup = document.getElementById("siteDataGroup");
-      siteDataGroup.removeAttribute("data-hidden-from-search");
-    }
-
-    let notificationInfoURL =
-      Services.urlFormatter.formatURLPref("app.support.baseURL") + "push";
-    document.getElementById("notificationPermissionsLearnMore").setAttribute("href",
-                                                                         notificationInfoURL);
-    let drmInfoURL =
-      Services.urlFormatter.formatURLPref("app.support.baseURL") + "drm-content";
-    document.getElementById("playDRMContentLink").setAttribute("href", drmInfoURL);
-    let emeUIEnabled = Services.prefs.getBoolPref("browser.eme.ui.enabled");
-    // Force-disable/hide on WinXP:
-    if (navigator.platform.toLowerCase().startsWith("win")) {
-      emeUIEnabled = emeUIEnabled && parseFloat(Services.sysinfo.get("version")) >= 6;
-    }
-    if (!emeUIEnabled) {
-      // Don't want to rely on .hidden for the toplevel groupbox because
-      // of the pane hiding/showing code potentially interfering:
-      document.getElementById("drmGroup").setAttribute("style", "display: none !important");
-    }
-
-    this.initDataCollection();
-    if (AppConstants.MOZ_CRASHREPORTER) {
-      this.initSubmitCrashes();
-    }
-    this.initSubmitHealthReport();
-    setEventListener("submitHealthReportBox", "command",
-                     gPrivacyPane.updateSubmitHealthReport);
-    this._initA11yState();
-    let bundlePrefs = document.getElementById("bundlePreferences");
-    let signonBundle = document.getElementById("signonBundle");
-    let pkiBundle = document.getElementById("pkiBundle");
-    appendSearchKeywords("passwordExceptions", [
-      bundlePrefs.getString("savedLoginsExceptions_title"),
-      bundlePrefs.getString("savedLoginsExceptions_desc2"),
-    ]);
-    appendSearchKeywords("showPasswords", [
-      signonBundle.getString("loginsDescriptionAll2"),
-    ]);
-    appendSearchKeywords("trackingProtectionExceptions", [
-      bundlePrefs.getString("trackingprotectionpermissionstitle"),
-      bundlePrefs.getString("trackingprotectionpermissionstext2"),
-    ]);
-    appendSearchKeywords("changeBlockList", [
-      bundlePrefs.getString("blockliststitle"),
-      bundlePrefs.getString("blockliststext"),
-    ]);
-    appendSearchKeywords("popupPolicyButton", [
-      bundlePrefs.getString("popuppermissionstitle2"),
-      bundlePrefs.getString("popuppermissionstext"),
-    ]);
-    appendSearchKeywords("notificationSettingsButton", [
-      bundlePrefs.getString("notificationspermissionstitle2"),
-      bundlePrefs.getString("notificationspermissionstext5"),
-    ]);
-    appendSearchKeywords("locationSettingsButton", [
-      bundlePrefs.getString("locationpermissionstitle"),
-      bundlePrefs.getString("locationpermissionstext"),
-    ]);
-    appendSearchKeywords("cameraSettingsButton", [
-      bundlePrefs.getString("camerapermissionstitle"),
-      bundlePrefs.getString("camerapermissionstext"),
-    ]);
-    appendSearchKeywords("microphoneSettingsButton", [
-      bundlePrefs.getString("microphonepermissionstitle"),
-      bundlePrefs.getString("microphonepermissionstext"),
-    ]);
-    appendSearchKeywords("addonExceptions", [
-      bundlePrefs.getString("addons_permissions_title2"),
-      bundlePrefs.getString("addonspermissionstext"),
-    ]);
-    appendSearchKeywords("viewSecurityDevicesButton", [
-      pkiBundle.getString("enable_fips"),
-    ]);
-    appendSearchKeywords("siteDataSettings", [
-      bundlePrefs.getString("siteDataSettings2.description"),
-      bundlePrefs.getString("removeAllCookies.label"),
-      bundlePrefs.getString("removeSelectedCookies.label"),
-    ]);
-
-    // Notify observers that the UI is now ready
-    Components.classes["@mozilla.org/observer-service;1"]
-              .getService(Components.interfaces.nsIObserverService)
-              .notifyObservers(window, "privacy-pane-loaded");
-  },
-
-  // TRACKING PROTECTION MODE
-
-  /**
-   * Selects the right item of the Tracking Protection radiogroup.
-   */
-  trackingProtectionReadPrefs() {
-    let enabledPref = document.getElementById("privacy.trackingprotection.enabled");
-    let pbmPref = document.getElementById("privacy.trackingprotection.pbmode.enabled");
-    let radiogroup = document.getElementById("trackingProtectionRadioGroup");
-
-    // Global enable takes precedence over enabled in Private Browsing.
-    if (enabledPref.value) {
-      radiogroup.value = "always";
-    } else if (pbmPref.value) {
-      radiogroup.value = "private";
-    } else {
-      radiogroup.value = "never";
-    }
-  },
-
-  /**
-   * Sets the pref values based on the selected item of the radiogroup.
-   */
-  trackingProtectionWritePrefs() {
-    let enabledPref = document.getElementById("privacy.trackingprotection.enabled");
-    let pbmPref = document.getElementById("privacy.trackingprotection.pbmode.enabled");
-    let radiogroup = document.getElementById("trackingProtectionRadioGroup");
-
-    switch (radiogroup.value) {
-      case "always":
-        enabledPref.value = true;
-        pbmPref.value = true;
-        break;
-      case "private":
-        enabledPref.value = false;
-        pbmPref.value = true;
-        break;
-      case "never":
-        enabledPref.value = false;
-        pbmPref.value = false;
-        break;
-    }
-  },
-
-  // HISTORY MODE
-
-  /**
-   * The list of preferences which affect the initial history mode settings.
-   * If the auto start private browsing mode pref is active, the initial
-   * history mode would be set to "Don't remember anything".
-   * If ALL of these preferences are set to the values that correspond
-   * to keeping some part of history, and the auto-start
-   * private browsing mode is not active, the initial history mode would be
-   * set to "Remember everything".
-   * Otherwise, the initial history mode would be set to "Custom".
-   *
-   * Extensions adding their own preferences can set values here if needed.
-   */
-  prefsForKeepingHistory: {
-    "places.history.enabled": true, // History is enabled
-    "browser.formfill.enable": true, // Form information is saved
-    "network.cookie.cookieBehavior": 0, // All cookies are enabled
-    "network.cookie.lifetimePolicy": 0, // Cookies use supplied lifetime
-    "privacy.sanitize.sanitizeOnShutdown": false, // Private date is NOT cleared on shutdown
-  },
-
-  /**
-   * The list of control IDs which are dependent on the auto-start private
-   * browsing setting, such that in "Custom" mode they would be disabled if
-   * the auto-start private browsing checkbox is checked, and enabled otherwise.
-   *
-   * Extensions adding their own controls can append their IDs to this array if needed.
-   */
-  dependentControls: [
-    "rememberHistory",
-    "rememberForms",
-    "keepUntil",
-    "keepCookiesUntil",
-    "alwaysClear",
-    "clearDataSettings"
-  ],
-
-  /**
-   * Check whether preferences values are set to keep history
-   *
-   * @param aPrefs an array of pref names to check for
-   * @returns boolean true if all of the prefs are set to keep history,
-   *                  false otherwise
-   */
-  _checkHistoryValues(aPrefs) {
-    for (let pref of Object.keys(aPrefs)) {
-      if (document.getElementById(pref).value != aPrefs[pref])
-        return false;
-    }
-    return true;
-  },
-
-  /**
-   * Initialize the history mode menulist based on the privacy preferences
-   */
-  initializeHistoryMode() {
-    let mode;
-    let getVal = aPref => document.getElementById(aPref).value;
-
-    if (getVal("privacy.history.custom"))
-      mode = "custom";
-    else if (this._checkHistoryValues(this.prefsForKeepingHistory)) {
-      if (getVal("browser.privatebrowsing.autostart"))
-        mode = "dontremember";
-      else
-        mode = "remember";
-    } else
-      mode = "custom";
-
-    document.getElementById("historyMode").value = mode;
-  },
-
-  /**
-   * Update the selected pane based on the history mode menulist
-   */
-  updateHistoryModePane() {
-    let selectedIndex = -1;
-    switch (document.getElementById("historyMode").value) {
-    case "remember":
-      selectedIndex = 0;
-      break;
-    case "dontremember":
-      selectedIndex = 1;
-      break;
-    case "custom":
-      selectedIndex = 2;
-      break;
-    }
-    document.getElementById("historyPane").selectedIndex = selectedIndex;
-    document.getElementById("privacy.history.custom").value = selectedIndex == 2;
-  },
-
-  /**
-   * Update the private browsing auto-start pref and the history mode
-   * micro-management prefs based on the history mode menulist
-   */
-  updateHistoryModePrefs() {
-    let pref = document.getElementById("browser.privatebrowsing.autostart");
-    switch (document.getElementById("historyMode").value) {
-    case "remember":
-      if (pref.value)
-        pref.value = false;
-
-      // select the remember history option if needed
-      document.getElementById("places.history.enabled").value = true;
-
-      // select the remember forms history option
-      document.getElementById("browser.formfill.enable").value = true;
-
-      // select the allow cookies option
-      document.getElementById("network.cookie.cookieBehavior").value = 0;
-      // select the cookie lifetime policy option
-      document.getElementById("network.cookie.lifetimePolicy").value = 0;
-
-      // select the clear on close option
-      document.getElementById("privacy.sanitize.sanitizeOnShutdown").value = false;
-      break;
-    case "dontremember":
-      if (!pref.value)
-        pref.value = true;
-      break;
-    }
-  },
-
-  /**
-   * Update the privacy micro-management controls based on the
-   * value of the private browsing auto-start checkbox.
-   */
-  updatePrivacyMicroControls() {
-    if (document.getElementById("historyMode").value == "custom") {
-      let disabled = this._autoStartPrivateBrowsing =
-        document.getElementById("privateBrowsingAutoStart").checked;
-      this.dependentControls.forEach(function(aElement) {
-        let control = document.getElementById(aElement);
-        let preferenceId = control.getAttribute("preference");
-        if (!preferenceId) {
-          let dependentControlId = control.getAttribute("control");
-          if (dependentControlId) {
-            let dependentControl = document.getElementById(dependentControlId);
-            preferenceId = dependentControl.getAttribute("preference");
-          }
-        }
-
-        let preference = preferenceId ? document.getElementById(preferenceId) : {};
-        control.disabled = disabled || preference.locked;
-      });
-
-      // adjust the cookie controls status
-      this.readAcceptCookies();
-      let lifetimePolicy = document.getElementById("network.cookie.lifetimePolicy").value;
-      if (lifetimePolicy != Ci.nsICookieService.ACCEPT_NORMALLY &&
-          lifetimePolicy != Ci.nsICookieService.ACCEPT_SESSION &&
-          lifetimePolicy != Ci.nsICookieService.ACCEPT_FOR_N_DAYS) {
-        lifetimePolicy = Ci.nsICookieService.ACCEPT_NORMALLY;
-      }
-      document.getElementById("keepCookiesUntil").value = disabled ? 2 : lifetimePolicy;
-
-      // adjust the checked state of the sanitizeOnShutdown checkbox
-      document.getElementById("alwaysClear").checked = disabled ? false :
-        document.getElementById("privacy.sanitize.sanitizeOnShutdown").value;
-
-      // adjust the checked state of the remember history checkboxes
-      document.getElementById("rememberHistory").checked = disabled ? false :
-        document.getElementById("places.history.enabled").value;
-      document.getElementById("rememberForms").checked = disabled ? false :
-        document.getElementById("browser.formfill.enable").value;
-
-      if (!disabled) {
-        // adjust the Settings button for sanitizeOnShutdown
-        this._updateSanitizeSettingsButton();
-      }
-    }
-  },
-
-  // PRIVATE BROWSING
-
-  /**
-   * Initialize the starting state for the auto-start private browsing mode pref reverter.
-   */
-  initAutoStartPrivateBrowsingReverter() {
-    let mode = document.getElementById("historyMode");
-    let autoStart = document.getElementById("privateBrowsingAutoStart");
-    this._lastMode = mode.selectedIndex;
-    this._lastCheckState = autoStart.hasAttribute("checked");
-  },
-
-  _lastMode: null,
-  _lastCheckState: null,
-  updateAutostart() {
-      let mode = document.getElementById("historyMode");
-      let autoStart = document.getElementById("privateBrowsingAutoStart");
-      let pref = document.getElementById("browser.privatebrowsing.autostart");
-      if ((mode.value == "custom" && this._lastCheckState == autoStart.checked) ||
-          (mode.value == "remember" && !this._lastCheckState) ||
-          (mode.value == "dontremember" && this._lastCheckState)) {
-          // These are all no-op changes, so we don't need to prompt.
-          this._lastMode = mode.selectedIndex;
-          this._lastCheckState = autoStart.hasAttribute("checked");
-          return;
-      }
-
-      if (!this._shouldPromptForRestart) {
-        // We're performing a revert. Just let it happen.
-        return;
-      }
-
-      let buttonIndex = confirmRestartPrompt(autoStart.checked, 1,
-                                             true, false);
-      if (buttonIndex == CONFIRM_RESTART_PROMPT_RESTART_NOW) {
-        pref.value = autoStart.hasAttribute("checked");
-        let appStartup = Cc["@mozilla.org/toolkit/app-startup;1"]
-                           .getService(Ci.nsIAppStartup);
-        appStartup.quit(Ci.nsIAppStartup.eAttemptQuit | Ci.nsIAppStartup.eRestart);
-        return;
-      }
-
-      this._shouldPromptForRestart = false;
-
-      if (this._lastCheckState) {
-        autoStart.checked = "checked";
-      } else {
-        autoStart.removeAttribute("checked");
-      }
-      pref.value = autoStart.hasAttribute("checked");
-      mode.selectedIndex = this._lastMode;
-      mode.doCommand();
-
-      this._shouldPromptForRestart = true;
-  },
-
-  /**
-   * Displays fine-grained, per-site preferences for tracking protection.
-   */
-  showTrackingProtectionExceptions() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let params = {
-      permissionType: "trackingprotection",
-      hideStatusColumn: true,
-      windowTitle: bundlePreferences.getString("trackingprotectionpermissionstitle"),
-      introText: bundlePreferences.getString("trackingprotectionpermissionstext2"),
-    };
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    null, params);
-  },
-
-  /**
-   * Displays the available block lists for tracking protection.
-   */
-  showBlockLists() {
-    var bundlePreferences = document.getElementById("bundlePreferences");
-    let brandName = document.getElementById("bundleBrand")
-                            .getString("brandShortName");
-    var params = { brandShortName: brandName,
-                   windowTitle: bundlePreferences.getString("blockliststitle"),
-                   introText: bundlePreferences.getString("blockliststext") };
-    gSubDialog.open("chrome://browser/content/preferences/blocklists.xul",
-                    null, params);
-  },
-
-  /**
-   * Displays the Do Not Track settings dialog.
-   */
-  showDoNotTrackSettings() {
-    gSubDialog.open("chrome://browser/content/preferences/donottrack.xul",
-                    "resizable=no");
-  },
-
-  // HISTORY
-
-  /*
-   * Preferences:
-   *
-   * places.history.enabled
-   * - whether history is enabled or not
-   * browser.formfill.enable
-   * - true if entries in forms and the search bar should be saved, false
-   *   otherwise
-   */
-
-  // COOKIES
-
-  /*
-   * Preferences:
-   *
-   * network.cookie.cookieBehavior
-   * - determines how the browser should handle cookies:
-   *     0   means enable all cookies
-   *     1   means reject all third party cookies
-   *     2   means disable all cookies
-   *     3   means reject third party cookies unless at least one is already set for the eTLD
-   *         see netwerk/cookie/src/nsCookieService.cpp for details
-   * network.cookie.lifetimePolicy
-   * - determines how long cookies are stored:
-   *     0   means keep cookies until they expire
-   *     2   means keep cookies until the browser is closed
-   */
-
-  /**
-   * Reads the network.cookie.cookieBehavior preference value and
-   * enables/disables the rest of the cookie UI accordingly, returning true
-   * if cookies are enabled.
-   */
-  readAcceptCookies() {
-    var pref = document.getElementById("network.cookie.cookieBehavior");
-    var acceptThirdPartyLabel = document.getElementById("acceptThirdPartyLabel");
-    var acceptThirdPartyMenu = document.getElementById("acceptThirdPartyMenu");
-    var keepUntil = document.getElementById("keepUntil");
-    var menu = document.getElementById("keepCookiesUntil");
-
-    // enable the rest of the UI for anything other than "disable all cookies"
-    var acceptCookies = (pref.value != 2);
-
-    acceptThirdPartyLabel.disabled = acceptThirdPartyMenu.disabled = !acceptCookies;
-    keepUntil.disabled = menu.disabled = this._autoStartPrivateBrowsing || !acceptCookies;
-
-    return acceptCookies;
-  },
-
-  /**
-   * Enables/disables the "keep until" label and menulist in response to the
-   * "accept cookies" checkbox being checked or unchecked.
-   */
-  writeAcceptCookies() {
-    var accept = document.getElementById("acceptCookies");
-    var acceptThirdPartyMenu = document.getElementById("acceptThirdPartyMenu");
-
-    // if we're enabling cookies, automatically select 'accept third party always'
-    if (accept.checked)
-      acceptThirdPartyMenu.selectedIndex = 0;
-
-    return accept.checked ? 0 : 2;
-  },
-
-  /**
-   * Converts between network.cookie.cookieBehavior and the third-party cookie UI
-   */
-  readAcceptThirdPartyCookies() {
-    var pref = document.getElementById("network.cookie.cookieBehavior");
-    switch (pref.value) {
-      case 0:
-        return "always";
-      case 1:
-        return "never";
-      case 2:
-        return "never";
-      case 3:
-        return "visited";
-      default:
-        return undefined;
-    }
-  },
-
-  writeAcceptThirdPartyCookies() {
-    var accept = document.getElementById("acceptThirdPartyMenu").selectedItem;
-    switch (accept.value) {
-      case "always":
-        return 0;
-      case "visited":
-        return 3;
-      case "never":
-        return 1;
-      default:
-        return undefined;
-    }
-  },
-
-  /**
-   * Displays fine-grained, per-site preferences for cookies.
-   */
-  showCookieExceptions() {
-    var bundlePreferences = document.getElementById("bundlePreferences");
-    var params = { blockVisible: true,
-                   sessionVisible: true,
-                   allowVisible: true,
-                   prefilledHost: "",
-                   permissionType: "cookie",
-                   windowTitle: bundlePreferences.getString("cookiepermissionstitle"),
-                   introText: bundlePreferences.getString("cookiepermissionstext") };
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    null, params);
-  },
-
-  /**
-   * Displays all the user's cookies in a dialog.
-   */
-  showCookies(aCategory) {
-    gSubDialog.open("chrome://browser/content/preferences/cookies.xul");
-  },
-
-  // CLEAR PRIVATE DATA
-
-  /*
-   * Preferences:
-   *
-   * privacy.sanitize.sanitizeOnShutdown
-   * - true if the user's private data is cleared on startup according to the
-   *   Clear Private Data settings, false otherwise
-   */
-
-  /**
-   * Displays the Clear Private Data settings dialog.
-   */
-  showClearPrivateDataSettings() {
-    gSubDialog.open("chrome://browser/content/preferences/sanitize.xul", "resizable=no");
-  },
-
-
-  /**
-   * Displays a dialog from which individual parts of private data may be
-   * cleared.
-   */
-  clearPrivateDataNow(aClearEverything) {
-    var ts = document.getElementById("privacy.sanitize.timeSpan");
-    var timeSpanOrig = ts.value;
-
-    if (aClearEverything) {
-      ts.value = 0;
-    }
-
-    gSubDialog.open("chrome://browser/content/sanitize.xul", "resizable=no", null, () => {
-      // reset the timeSpan pref
-      if (aClearEverything) {
-        ts.value = timeSpanOrig;
-      }
-
-      Services.obs.notifyObservers(null, "clear-private-data");
-    });
-  },
-
-  /**
-   * Enables or disables the "Settings..." button depending
-   * on the privacy.sanitize.sanitizeOnShutdown preference value
-   */
-  _updateSanitizeSettingsButton() {
-    var settingsButton = document.getElementById("clearDataSettings");
-    var sanitizeOnShutdownPref = document.getElementById("privacy.sanitize.sanitizeOnShutdown");
-
-    settingsButton.disabled = !sanitizeOnShutdownPref.value;
-   },
-
-  // CONTAINERS
-
-  /*
-   * preferences:
-   *
-   * privacy.userContext.enabled
-   * - true if containers is enabled
-   */
-
-   /**
-    * Enables/disables the Settings button used to configure containers
-    */
-   readBrowserContainersCheckbox() {
-     var pref = document.getElementById("privacy.userContext.enabled");
-     var settings = document.getElementById("browserContainersSettings");
-
-     settings.disabled = !pref.value;
-   },
-
-   toggleDoNotDisturbNotifications(event) {
-     AlertsServiceDND.manualDoNotDisturb = event.target.checked;
-   },
-
-  // GEOLOCATION
-
-  /**
-   * Displays the location exceptions dialog where specific site location
-   * preferences can be set.
-   */
-  showLocationExceptions() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let params = { permissionType: "geo"};
-    params.windowTitle = bundlePreferences.getString("locationpermissionstitle");
-    params.introText = bundlePreferences.getString("locationpermissionstext");
-
-    gSubDialog.open("chrome://browser/content/preferences/sitePermissions.xul",
-                    "resizable=yes", params);
-  },
-
-  // CAMERA
-
-  /**
-   * Displays the camera exceptions dialog where specific site camera
-   * preferences can be set.
-   */
-  showCameraExceptions() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let params = { permissionType: "camera"};
-    params.windowTitle = bundlePreferences.getString("camerapermissionstitle");
-    params.introText = bundlePreferences.getString("camerapermissionstext");
-
-    gSubDialog.open("chrome://browser/content/preferences/sitePermissions.xul",
-                    "resizable=yes", params);
-  },
-
-  // MICROPHONE
-
-  /**
-   * Displays the microphone exceptions dialog where specific site microphone
-   * preferences can be set.
-   */
-  showMicrophoneExceptions() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let params = { permissionType: "microphone"};
-    params.windowTitle = bundlePreferences.getString("microphonepermissionstitle");
-    params.introText = bundlePreferences.getString("microphonepermissionstext");
-
-    gSubDialog.open("chrome://browser/content/preferences/sitePermissions.xul",
-                    "resizable=yes", params);
-  },
-
-  // NOTIFICATIONS
-
-  /**
-   * Displays the notifications exceptions dialog where specific site notification
-   * preferences can be set.
-   */
-  showNotificationExceptions() {
-    let bundlePreferences = document.getElementById("bundlePreferences");
-    let params = { permissionType: "desktop-notification"};
-    params.windowTitle = bundlePreferences.getString("notificationspermissionstitle2");
-    params.introText = bundlePreferences.getString("notificationspermissionstext5");
-
-    gSubDialog.open("chrome://browser/content/preferences/sitePermissions.xul",
-                    "resizable=yes", params);
-
-    try {
-      Services.telemetry
-              .getHistogramById("WEB_NOTIFICATION_EXCEPTIONS_OPENED").add();
-    } catch (e) {}
-  },
-
-
-  // POP-UPS
-
-  /**
-   * Displays the popup exceptions dialog where specific site popup preferences
-   * can be set.
-   */
-  showPopupExceptions() {
-    var bundlePreferences = document.getElementById("bundlePreferences");
-    var params = { blockVisible: false, sessionVisible: false, allowVisible: true,
-                   prefilledHost: "", permissionType: "popup" }
-    params.windowTitle = bundlePreferences.getString("popuppermissionstitle2");
-    params.introText = bundlePreferences.getString("popuppermissionstext");
-
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    "resizable=yes", params);
-  },
-
-   // UTILITY FUNCTIONS
-
-  /**
-   * Utility function to enable/disable the button specified by aButtonID based
-   * on the value of the Boolean preference specified by aPreferenceID.
-   */
-  updateButtons(aButtonID, aPreferenceID) {
-    var button = document.getElementById(aButtonID);
-    var preference = document.getElementById(aPreferenceID);
-    button.disabled = preference.value != true;
-    return undefined;
-  },
-
-  // BEGIN UI CODE
-
-  /*
-   * Preferences:
-   *
-   * dom.disable_open_during_load
-   * - true if popups are blocked by default, false otherwise
-   */
-
-  // POP-UPS
-
-  /**
-   * Displays a dialog in which the user can view and modify the list of sites
-   * where passwords are never saved.
-   */
-  showPasswordExceptions() {
-    var bundlePrefs = document.getElementById("bundlePreferences");
-    var params = {
-      blockVisible: true,
-      sessionVisible: false,
-      allowVisible: false,
-      hideStatusColumn: true,
-      prefilledHost: "",
-      permissionType: "login-saving",
-      windowTitle: bundlePrefs.getString("savedLoginsExceptions_title"),
-      introText: bundlePrefs.getString("savedLoginsExceptions_desc2")
-    };
-
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    null, params);
-  },
-
-  /**
-   * Initializes master password UI: the "use master password" checkbox, selects
-   * the master password button to show, and enables/disables it as necessary.
-   * The master password is controlled by various bits of NSS functionality, so
-   * the UI for it can't be controlled by the normal preference bindings.
-   */
-  _initMasterPasswordUI() {
-    var noMP = !LoginHelper.isMasterPasswordSet();
-
-    var button = document.getElementById("changeMasterPassword");
-    button.disabled = noMP;
-
-    var checkbox = document.getElementById("useMasterPassword");
-    checkbox.checked = !noMP;
-  },
-
-  /**
-   * Enables/disables the master password button depending on the state of the
-   * "use master password" checkbox, and prompts for master password removal if
-   * one is set.
-   */
-  updateMasterPasswordButton() {
-    var checkbox = document.getElementById("useMasterPassword");
-    var button = document.getElementById("changeMasterPassword");
-    button.disabled = !checkbox.checked;
-
-    // unchecking the checkbox should try to immediately remove the master
-    // password, because it's impossible to non-destructively remove the master
-    // password used to encrypt all the passwords without providing it (by
-    // design), and it would be extremely odd to pop up that dialog when the
-    // user closes the prefwindow and saves his settings
-    if (!checkbox.checked)
-      this._removeMasterPassword();
-    else
-      this.changeMasterPassword();
-
-    this._initMasterPasswordUI();
-  },
-
-  /**
-   * Displays the "remove master password" dialog to allow the user to remove
-   * the current master password.  When the dialog is dismissed, master password
-   * UI is automatically updated.
-   */
-  _removeMasterPassword() {
-    var secmodDB = Cc["@mozilla.org/security/pkcs11moduledb;1"].
-                   getService(Ci.nsIPKCS11ModuleDB);
-    if (secmodDB.isFIPSEnabled) {
-      var promptService = Cc["@mozilla.org/embedcomp/prompt-service;1"].
-                          getService(Ci.nsIPromptService);
-      var bundle = document.getElementById("bundlePreferences");
-      promptService.alert(window,
-                          bundle.getString("pw_change_failed_title"),
-                          bundle.getString("pw_change2empty_in_fips_mode"));
-      this._initMasterPasswordUI();
-    } else {
-      gSubDialog.open("chrome://mozapps/content/preferences/removemp.xul",
-                      null, null, this._initMasterPasswordUI.bind(this));
-    }
-  },
-
-  /**
-   * Displays a dialog in which the master password may be changed.
-   */
-  changeMasterPassword() {
-    gSubDialog.open("chrome://mozapps/content/preferences/changemp.xul",
-                    "resizable=no", null, this._initMasterPasswordUI.bind(this));
-  },
-
-    /**
-   * Shows the sites where the user has saved passwords and the associated login
-   * information.
-   */
-  showPasswords() {
-    gSubDialog.open("chrome://passwordmgr/content/passwordManager.xul");
-  },
-
-  /**
-   * Enables/disables the Exceptions button used to configure sites where
-   * passwords are never saved. When browser is set to start in Private
-   * Browsing mode, the "Remember passwords" UI is useless, so we disable it.
-   */
-  readSavePasswords() {
-    var pref = document.getElementById("signon.rememberSignons");
-    var excepts = document.getElementById("passwordExceptions");
-
-    if (PrivateBrowsingUtils.permanentPrivateBrowsing) {
-      document.getElementById("savePasswords").disabled = true;
-      excepts.disabled = true;
-      return false;
-    }
-    excepts.disabled = !pref.value;
-    // don't override pref value in UI
-    return undefined;
-  },
-
-  /**
-   * Enables/disables the add-ons Exceptions button depending on whether
-   * or not add-on installation warnings are displayed.
-   */
-  readWarnAddonInstall() {
-    var warn = document.getElementById("xpinstall.whitelist.required");
-    var exceptions = document.getElementById("addonExceptions");
-
-    exceptions.disabled = !warn.value;
-
-    // don't override the preference value
-    return undefined;
-  },
-
-  _initSafeBrowsing() {
-    let enableSafeBrowsing = document.getElementById("enableSafeBrowsing");
-    let blockDownloads = document.getElementById("blockDownloads");
-    let blockUncommonUnwanted = document.getElementById("blockUncommonUnwanted");
-
-    let safeBrowsingPhishingPref = document.getElementById("browser.safebrowsing.phishing.enabled");
-    let safeBrowsingMalwarePref = document.getElementById("browser.safebrowsing.malware.enabled");
-
-    let blockDownloadsPref = document.getElementById("browser.safebrowsing.downloads.enabled");
-    let malwareTable = document.getElementById("urlclassifier.malwareTable");
-
-    let blockUnwantedPref = document.getElementById("browser.safebrowsing.downloads.remote.block_potentially_unwanted");
-    let blockUncommonPref = document.getElementById("browser.safebrowsing.downloads.remote.block_uncommon");
-
-    enableSafeBrowsing.addEventListener("command", function() {
-      safeBrowsingPhishingPref.value = enableSafeBrowsing.checked;
-      safeBrowsingMalwarePref.value = enableSafeBrowsing.checked;
-
-      if (enableSafeBrowsing.checked) {
-        blockDownloads.removeAttribute("disabled");
-        if (blockDownloads.checked) {
-          blockUncommonUnwanted.removeAttribute("disabled");
-        }
-      } else {
-        blockDownloads.setAttribute("disabled", "true");
-        blockUncommonUnwanted.setAttribute("disabled", "true");
-      }
-    });
-
-    blockDownloads.addEventListener("command", function() {
-      blockDownloadsPref.value = blockDownloads.checked;
-      if (blockDownloads.checked) {
-        blockUncommonUnwanted.removeAttribute("disabled");
-      } else {
-        blockUncommonUnwanted.setAttribute("disabled", "true");
-      }
-    });
-
-    blockUncommonUnwanted.addEventListener("command", function() {
-      blockUnwantedPref.value = blockUncommonUnwanted.checked;
-      blockUncommonPref.value = blockUncommonUnwanted.checked;
-
-      let malware = malwareTable.value
-        .split(",")
-        .filter(x => x !== "goog-unwanted-proto" &&
-                     x !== "goog-unwanted-shavar" &&
-                     x !== "test-unwanted-simple");
-
-      if (blockUncommonUnwanted.checked) {
-        if (malware.indexOf("goog-malware-shavar") != -1) {
-          malware.push("goog-unwanted-shavar");
-        } else {
-          malware.push("goog-unwanted-proto");
-        }
-
-        malware.push("test-unwanted-simple");
-      }
-
-      // sort alphabetically to keep the pref consistent
-      malware.sort();
-
-      malwareTable.value = malware.join(",");
-    });
-
-    // set initial values
-
-    enableSafeBrowsing.checked = safeBrowsingPhishingPref.value && safeBrowsingMalwarePref.value;
-    if (!enableSafeBrowsing.checked) {
-      blockDownloads.setAttribute("disabled", "true");
-      blockUncommonUnwanted.setAttribute("disabled", "true");
-    }
-
-    blockDownloads.checked = blockDownloadsPref.value;
-    if (!blockDownloadsPref.value) {
-      blockUncommonUnwanted.setAttribute("disabled", "true");
-    }
-
-    blockUncommonUnwanted.checked = blockUnwantedPref.value && blockUncommonPref.value;
-  },
-
-  /**
-   * Displays the exceptions lists for add-on installation warnings.
-   */
-  showAddonExceptions() {
-    var bundlePrefs = document.getElementById("bundlePreferences");
-
-    var params = this._addonParams;
-    if (!params.windowTitle || !params.introText) {
-      params.windowTitle = bundlePrefs.getString("addons_permissions_title2");
-      params.introText = bundlePrefs.getString("addonspermissionstext");
-    }
-
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    null, params);
-  },
-
-  /**
-   * Parameters for the add-on install permissions dialog.
-   */
-  _addonParams:
-    {
-      blockVisible: false,
-      sessionVisible: false,
-      allowVisible: true,
-      prefilledHost: "",
-      permissionType: "install"
-    },
-
-  /**
-   * readEnableOCSP is used by the preferences UI to determine whether or not
-   * the checkbox for OCSP fetching should be checked (it returns true if it
-   * should be checked and false otherwise). The about:config preference
-   * "security.OCSP.enabled" is an integer rather than a boolean, so it can't be
-   * directly mapped from {true,false} to {checked,unchecked}. The possible
-   * values for "security.OCSP.enabled" are:
-   * 0: fetching is disabled
-   * 1: fetch for all certificates
-   * 2: fetch only for EV certificates
-   * Hence, if "security.OCSP.enabled" is non-zero, the checkbox should be
-   * checked. Otherwise, it should be unchecked.
-   */
-  readEnableOCSP() {
-    var preference = document.getElementById("security.OCSP.enabled");
-    // This is the case if the preference is the default value.
-    if (preference.value === undefined) {
-      return true;
-    }
-    return preference.value != 0;
-  },
-
-  /**
-   * writeEnableOCSP is used by the preferences UI to map the checked/unchecked
-   * state of the OCSP fetching checkbox to the value that the preference
-   * "security.OCSP.enabled" should be set to (it returns that value). See the
-   * readEnableOCSP documentation for more background. We unfortunately don't
-   * have enough information to map from {true,false} to all possible values for
-   * "security.OCSP.enabled", but a reasonable alternative is to map from
-   * {true,false} to {<the default value>,0}. That is, if the box is checked,
-   * "security.OCSP.enabled" will be set to whatever default it should be, given
-   * the platform and channel. If the box is unchecked, the preference will be
-   * set to 0. Obviously this won't work if the default is 0, so we will have to
-   * revisit this if we ever set it to 0.
-   */
-  writeEnableOCSP() {
-    var checkbox = document.getElementById("enableOCSP");
-    var defaults = Services.prefs.getDefaultBranch(null);
-    var defaultValue = defaults.getIntPref("security.OCSP.enabled");
-    return checkbox.checked ? defaultValue : 0;
-  },
-
-  /**
-   * Displays the user's certificates and associated options.
-   */
-  showCertificates() {
-    gSubDialog.open("chrome://pippki/content/certManager.xul");
-  },
-
-  /**
-   * Displays a dialog from which the user can manage his security devices.
-   */
-  showSecurityDevices() {
-    gSubDialog.open("chrome://pippki/content/device_manager.xul");
-  },
-
-  /**
-   * Clears the cache.
-   */
-  clearCache() {
-    try {
-      var cache = Components.classes["@mozilla.org/netwerk/cache-storage-service;1"]
-                            .getService(Components.interfaces.nsICacheStorageService);
-      cache.clear();
-    } catch (ex) {}
-    this.updateActualCacheSize();
-  },
-
-  showOfflineExceptions() {
-    var bundlePreferences = document.getElementById("bundlePreferences");
-    var params = { blockVisible: false,
-                   sessionVisible: false,
-                   allowVisible: false,
-                   prefilledHost: "",
-                   permissionType: "offline-app",
-                   manageCapability: Components.interfaces.nsIPermissionManager.DENY_ACTION,
-                   windowTitle: bundlePreferences.getString("offlinepermissionstitle"),
-                   introText: bundlePreferences.getString("offlinepermissionstext") };
-    gSubDialog.open("chrome://browser/content/preferences/permissions.xul",
-                    null, params);
-  },
-
-
-  offlineAppSelected() {
-    var removeButton = document.getElementById("offlineAppsListRemove");
-    var list = document.getElementById("offlineAppsList");
-    if (list.selectedItem) {
-      removeButton.setAttribute("disabled", "false");
-    } else {
-      removeButton.setAttribute("disabled", "true");
-    }
-  },
-
-  showSiteDataSettings() {
-    gSubDialog.open("chrome://browser/content/preferences/siteDataSettings.xul");
-  },
-
-  toggleSiteData(shouldShow) {
-    let clearButton = document.getElementById("clearSiteDataButton");
-    let settingsButton = document.getElementById("siteDataSettings");
-    clearButton.disabled = !shouldShow;
-    settingsButton.disabled = !shouldShow;
-  },
-
-  updateTotalDataSizeLabel(usage) {
-    let prefStrBundle = document.getElementById("bundlePreferences");
-    let totalSiteDataSizeLabel = document.getElementById("totalSiteDataSize");
-    if (usage < 0) {
-      totalSiteDataSizeLabel.textContent = prefStrBundle.getString("loadingSiteDataSize");
-    } else {
-      let size = DownloadUtils.convertByteUnits(usage);
-      totalSiteDataSizeLabel.textContent = prefStrBundle.getFormattedString("totalSiteDataSize", size);
-    }
-  },
-
-  // Retrieves the amount of space currently used by disk cache
-  updateActualCacheSize(