Fix for toggling menu item visibility outside of create/prepare menu

Allow applications to transition from 0=>1+ visible menu items outside
of onCreatePanelMenu/onPreparePanel. Previously, having 0 visible items
at this point would require an invalidation of the options menu.

Bug 6452605

Change-Id: I6cbfc46d0e5ec42b8d78ee516e9b57fdeaf1a890

core/java/android/app/Activity.java

@@ -2493,7 +2493,7 @@ public class Activity extends ContextThemeWrapper
         if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) {
             boolean goforit = onPrepareOptionsMenu(menu);
             goforit |= mFragments.dispatchPrepareOptionsMenu(menu);
-            return goforit && menu.hasVisibleItems();
+            return goforit;
         }
         return true;
     }