Bug 1408118 - Disable Mac's insertion of its own full screen menu item as we already provide one. r=spohl

MozReview-Commit-ID: EgCWL00ZfUT

--HG--
extra : rebase_source : b59ddbe9dd6d2e7335d9a414fa77baf3f78ccaed

toolkit/xre/MacApplicationDelegate.mm

@@ -297,6 +297,12 @@ ProcessPendingGetURLAppleEvents()
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
 
+- (void)applicationWillFinishLaunching:(NSNotification*)notification {
+  // We provide our own full screen menu item, so we don't want the OS providing
+  // one as well.
+  [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"NSFullScreenMenuItemEverywhere"];
+}
+
 // If we don't handle applicationShouldTerminate:, a call to [NSApp terminate:]
 // (from the browser or from the OS) can result in an unclean shutdown.
 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender