Fix bug 2911311 and bug 2911700

Integrate the action bar overflow menu better with the options menu lifecycle.

Change-Id: I1e3fdba04b01718c3ee3367f92e5dabe7bc84b5c
diff --git a/core/java/com/android/internal/app/ActionBarImpl.java b/core/java/com/android/internal/app/ActionBarImpl.java
index 0be42d6..dd2ad6c 100644
--- a/core/java/com/android/internal/app/ActionBarImpl.java
+++ b/core/java/com/android/internal/app/ActionBarImpl.java
@@ -531,6 +531,8 @@
         }
 
         public void onMenuModeChange(MenuBuilder menu) {
+            invalidate();
+            mUpperContextView.showOverflowMenu();
         }
     }