--- a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoAppShell.java
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoAppShell.java
@@ -1058,22 +1058,16 @@ public class GeckoAppShell
 
         ALERT_COOKIES.put(aAlertName, aAlertCookie);
         callObserver(aAlertName, "alertshow", aAlertCookie);
 
         notificationClient.add(notificationID, aImageUrl, aHost, aAlertTitle, aAlertText, contentIntent, null);
     }
 
     @WrapForJNI
-    public static void alertsProgressListener_OnProgress(String aAlertName, long aProgress, long aProgressMax, String aAlertText) {
-        int notificationID = aAlertName.hashCode();
-        notificationClient.update(notificationID, aProgress, aProgressMax, aAlertText);
-    }
-
-    @WrapForJNI
     public static void closeNotification(String aAlertName) {
         String alertCookie = ALERT_COOKIES.get(aAlertName);
         if (alertCookie != null) {
             callObserver(aAlertName, "alertfinished", alertCookie);
             ALERT_COOKIES.remove(aAlertName);
         }
 
         removeObserver(aAlertName);

--- a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/notifications/NotificationClient.java
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/notifications/NotificationClient.java
@@ -17,62 +17,16 @@ import java.util.concurrent.ConcurrentHa
  * Client for posting notifications through a NotificationHandler.
  */
 public abstract class NotificationClient {
     private static final String LOGTAG = "GeckoNotificationClient";
 
     private volatile NotificationHandler mHandler;
     private boolean mReady;
     private final LinkedList<Runnable> mTaskQueue = new LinkedList<Runnable>();
-    private final ConcurrentHashMap<Integer, UpdateRunnable> mUpdatesMap =
-            new ConcurrentHashMap<Integer, UpdateRunnable>();
-
-    /**
-     * Runnable that is reused between update notifications.
-     *
-     * Updates happen frequently, so reusing Runnables prevents frequent dynamic allocation.
-     */
-    private class UpdateRunnable implements Runnable {
-        private long mProgress;
-        private long mProgressMax;
-        private String mAlertText;
-        final private int mNotificationID;
-
-        public UpdateRunnable(int notificationID) {
-            mNotificationID = notificationID;
-        }
-
-        public synchronized boolean updateProgress(long progress, long progressMax, String alertText) {
-            if (progress == mProgress
-                    && mProgressMax == progressMax
-                    && TextUtils.equals(mAlertText, alertText)) {
-                return false;
-            }
-
-            mProgress = progress;
-            mProgressMax = progressMax;
-            mAlertText = alertText;
-            return true;
-        }
-
-        @Override
-        public void run() {
-            long progress;
-            long progressMax;
-            String alertText;
-
-            synchronized (this) {
-                progress = mProgress;
-                progressMax = mProgressMax;
-                alertText = mAlertText;
-            }
-
-            mHandler.update(mNotificationID, progress, progressMax, alertText);
-        }
-    }
 
     /**
      * Adds a notification.
      *
      * @see NotificationHandler#add(int, String, String, String, String, PendingIntent, PendingIntent)
      */
     public synchronized void add(final int notificationID, final String aImageUrl, final String aHost,
                                  final String aAlertTitle, final String aAlertText,
@@ -105,54 +59,25 @@ public abstract class NotificationClient
         notify();
 
         if (!mReady) {
             bind();
         }
     }
 
     /**
-     * Updates a notification.
-     *
-     * @see NotificationHandler#update(int, long, long, String)
-     */
-    public void update(final int notificationID, final long aProgress, final long aProgressMax,
-                       final String aAlertText) {
-        UpdateRunnable runnable = mUpdatesMap.get(notificationID);
-
-        if (runnable == null) {
-            runnable = new UpdateRunnable(notificationID);
-            mUpdatesMap.put(notificationID, runnable);
-        }
-
-        // If we've already posted an update with these values, there's no
-        // need to do it again.
-        if (!runnable.updateProgress(aProgress, aProgressMax, aAlertText)) {
-            return;
-        }
-
-        synchronized (this) {
-            if (mReady) {
-                mTaskQueue.add(runnable);
-                notify();
-            }
-        }
-    }
-
-    /**
      * Removes a notification.
      *
      * @see NotificationHandler#remove(int)
      */
     public synchronized void remove(final int notificationID) {
         mTaskQueue.add(new Runnable() {
             @Override
             public void run() {
                 mHandler.remove(notificationID);
-                mUpdatesMap.remove(notificationID);
             }
         });
 
         // If mReady == false, we haven't added any notifications yet. That can happen if Fennec is being
         // started in response to clicking a notification. Call bind() to ensure the task we posted above is run.
         if (!mReady) {
             bind();
         }
@@ -171,17 +96,16 @@ public abstract class NotificationClient
     }
 
     protected void bind() {
         mReady = true;
     }
 
     protected void unbind() {
         mReady = false;
-        mUpdatesMap.clear();
     }
 
     protected void connectHandler(NotificationHandler handler) {
         mHandler = handler;
         new Thread(new NotificationRunnable()).start();
     }
 
     private class NotificationRunnable implements Runnable {

--- a/toolkit/components/alerts/nsAlertsService.cpp
+++ b/toolkit/components/alerts/nsAlertsService.cpp
@@ -137,17 +137,17 @@ ShowWithBackend(nsIAlertsService* aBacke
   // alert without one.
   return aBackend->ShowAlert(aAlert, aAlertListener);
 }
 
 #endif // MOZ_WIDGET_ANDROID
 
 } // anonymous namespace
 
-NS_IMPL_ISUPPORTS(nsAlertsService, nsIAlertsService, nsIAlertsDoNotDisturb, nsIAlertsProgressListener)
+NS_IMPL_ISUPPORTS(nsAlertsService, nsIAlertsService, nsIAlertsDoNotDisturb)
 
 nsAlertsService::nsAlertsService() :
   mBackend(nullptr)
 {
 #ifndef MOZ_WIDGET_ANDROID
   mBackend = do_GetService(NS_SYSTEMALERTSERVICE_CONTRACTID);
 #endif // MOZ_WIDGET_ANDROID
 }
@@ -343,40 +343,16 @@ NS_IMETHODIMP nsAlertsService::SetManual
   nsresult rv = alertsDND->SetManualDoNotDisturb(aDoNotDisturb);
   if (NS_SUCCEEDED(rv)) {
     Telemetry::Accumulate(Telemetry::ALERTS_SERVICE_DND_ENABLED, 1);
   }
   return rv;
 #endif
 }
 
-NS_IMETHODIMP nsAlertsService::OnProgress(const nsAString & aAlertName,
-                                          int64_t aProgress,
-                                          int64_t aProgressMax,
-                                          const nsAString & aAlertText)
-{
-#ifdef MOZ_WIDGET_ANDROID
-  java::GeckoAppShell::AlertsProgressListener_OnProgress(
-      aAlertName, aProgress, aProgressMax, aAlertText);
-  return NS_OK;
-#else
-  return NS_ERROR_NOT_IMPLEMENTED;
-#endif // !MOZ_WIDGET_ANDROID
-}
-
-NS_IMETHODIMP nsAlertsService::OnCancel(const nsAString & aAlertName)
-{
-#ifdef MOZ_WIDGET_ANDROID
-  java::GeckoAppShell::CloseNotification(aAlertName);
-  return NS_OK;
-#else
-  return NS_ERROR_NOT_IMPLEMENTED;
-#endif // !MOZ_WIDGET_ANDROID
-}
-
 already_AddRefed<nsIAlertsDoNotDisturb>
 nsAlertsService::GetDNDBackend()
 {
   // Try the system notification service.
   nsCOMPtr<nsIAlertsService> backend = mBackend;
   if (!backend) {
     backend = nsXULAlerts::GetInstance();
   }

--- a/toolkit/components/alerts/nsAlertsService.h
+++ b/toolkit/components/alerts/nsAlertsService.h
@@ -23,21 +23,19 @@ typedef enum tagMOZ_QUERY_USER_NOTIFICAT
 
 extern "C" {
 // This function is Windows Vista or later
 typedef HRESULT (__stdcall *SHQueryUserNotificationStatePtr)(MOZ_QUERY_USER_NOTIFICATION_STATE *pquns);
 }
 #endif // defined(XP_WIN)
 
 class nsAlertsService : public nsIAlertsService,
-                        public nsIAlertsDoNotDisturb,
-                        public nsIAlertsProgressListener
+                        public nsIAlertsDoNotDisturb
 {
 public:
-  NS_DECL_NSIALERTSPROGRESSLISTENER
   NS_DECL_NSIALERTSDONOTDISTURB
   NS_DECL_NSIALERTSSERVICE
   NS_DECL_ISUPPORTS
 
   nsAlertsService();
 
 protected:
   virtual ~nsAlertsService();

--- a/toolkit/components/alerts/nsIAlertsService.idl
+++ b/toolkit/components/alerts/nsIAlertsService.idl
@@ -217,46 +217,16 @@ interface nsIAlertsDoNotDisturb : nsISup
    * displaying them at all. If a system backend already supports a similar
    * feature controlled by the user, enabling this may not have any impact on
    * code to show an alert. e.g. on OS X, the system will take care not
    * disrupting a user if we simply create a notification like usual.
    */
   attribute bool manualDoNotDisturb;
 };
 
-[scriptable, uuid(df1bd4b0-3a8c-40e6-806a-203f38b0bd9f)]
-interface nsIAlertsProgressListener : nsISupports
-{
-  /**
-   * Called to notify the alert service that progress has occurred for the
-   * given notification previously displayed with showAlertNotification().
-   *
-   * @param aName        The name of the notification displaying the
-   *                     progress. On Android the name is hashed and used
-   *                     as a notification ID.
-   * @param aProgress    Numeric value in the range 0 to progressMax
-   *                     indicating the current progress.
-   * @param aProgressMax Numeric value indicating the maximum progress.
-   * @param aText        The contents of the alert. If not provided,
-   *                     the percentage will be displayed.
-   */
-  void onProgress(in AString aName,
-                  in long long aProgress,
-                  in long long aProgressMax,
-                  [optional] in AString aText);
-
-  /**
-   * Called to cancel and hide the given notification previously displayed
-   * with showAlertNotification().
-   *
-   * @param aName        The name of the notification.
-   */
-  void onCancel(in AString aName);
-};
-
 [scriptable, uuid(fc6d7f0a-0cf6-4268-8c71-ab640842b9b1)]
 interface nsIAlertsIconData : nsISupports
 {
   /**
    * Shows an alert with an icon. Web notifications use the favicon of the
    * page that created the alert. If the favicon is not in the Places database,
    * |aIconSize| will be zero.
   */