Bug 1429150 - Change nsIApplicationUpdateService::canCheckForUpdates implementation to respect new enterprise policy preventing app update r=Felipe,mhowell

MozReview-Commit-ID: 7vPaDbONcRr

--HG--
extra : rebase_source : 9c9f75dd72c9acdc2f70311e0fed31366f51bc13

browser/base/content/aboutDialog-appUpdater.js

@@ -137,8 +137,10 @@ appUpdater.prototype =
 
   // true when updating is disabled by an administrator.
   get updateDisabledAndLocked() {
-    return !this.updateEnabled &&
-           Services.prefs.prefIsLocked("app.update.enabled");
+    return (!this.updateEnabled &&
+           Services.prefs.prefIsLocked("app.update.enabled")) ||
+           (Services.policies &&
+           !Services.policies.isAllowed("appUpdate"));
   },
 
   // true when updating is enabled.

toolkit/mozapps/update/nsUpdateService.js

@@ -538,6 +538,12 @@ XPCOMUtils.defineLazyGetter(this, "gCanCheckForUpdates", function aus_gCanCheckF
     return false;
   }
 
+  if (Services.policies && !Services.policies.isAllowed("appUpdate")) {
+    LOG("gCanCheckForUpdates - unable to automatically check for updates. " +
+        "Functionality disabled by enterprise policy.");
+    return false;
+  }
+
   // If we don't know the binary platform we're updating, we can't update.
   if (!UpdateUtils.ABI) {
     LOG("gCanCheckForUpdates - unable to check for updates, unknown ABI");