mozilla-inbound: changeset 371216:39b5cf816c131724eb42a4f1b3a46b1c1be9c964

author	Shane Caraveo <scaraveo@mozilla.com>
	Wed, 26 Jul 2017 10:09:23 -0700
changeset 371216	39b5cf816c131724eb42a4f1b3a46b1c1be9c964
parent 371215	4df14467e14cd45297ff6fb096f9f4340e79144a
child 371217	d18e2a7fb353cef42ae6c21b76022b45b3cf89c7
push id	93049
push user	cbook@mozilla.com
push date	Thu, 27 Jul 2017 09:30:07 +0000
treeherder	mozilla-inbound@5e9f7561c2eb [default view] [failures only]
perfherder	[talos] [build metrics] [platform microbench] (compared to previous push)
reviewers	Gijs
bugs	1383908
milestone	56.0a1
first release with	nightly linux32 e5693cea1ec9 / 56.0a1 / 20170727100240 / files nightly linux64 e5693cea1ec9 / 56.0a1 / 20170727100240 / files nightly mac 5845151f1a2c / 56.0a1 / 20170728100358 / files nightly win32 e5693cea1ec9 / 56.0a1 / 20170727100347 / files nightly win64 e5693cea1ec9 / 56.0a1 / 20170727100347 / files
last release without	nightly linux32 e8400551c2e3 / 56.0a1 / 20170726100241 / files nightly linux64 e8400551c2e3 / 56.0a1 / 20170726100241 / files nightly mac e8400551c2e3 / 56.0a1 / 20170726100322 / files nightly win32 388d81ed93fa / 56.0a1 / 20170726155629 / files nightly win64 388d81ed93fa / 56.0a1 / 20170726155629 / files

--- a/browser/base/content/browser-social.js
+++ b/browser/base/content/browser-social.js
@@ -357,17 +357,17 @@ SocialShare = {
     }
     this.defaultButton.setAttribute("checked", "true");
   },
 
   get shareButton() {
     // web-panels (bookmark/sidebar) don't include customizableui, so
     // nsContextMenu fails when accessing shareButton, breaking
     // browser_bug409481.js.
-    if (!window.CustomizableUI)
+    if (document.documentElement.getAttribute("windowtype") !== "navigator:browser")
       return null;
     let widget = CustomizableUI.getWidget("social-share-button");
     if (!widget || !widget.areaType)
       return null;
     return widget.forWindow(window).node;
   },
 
   _onclick() {