Bug 1050780 - Avoid disabled items in GeckoMenu's adapter (r=margaret)

mobile/android/base/menu/GeckoMenu.java

@@ -786,7 +786,9 @@ public class GeckoMenu extends ListView
 
         @Override
         public boolean isEnabled(int position) {
-            return getItem(position).isEnabled();
+            // Setting this to true is a workaround to fix disappearing
+            // dividers in the menu in L (bug 1050780).
+            return true;
         }
 
         public void addMenuItem(GeckoMenuItem menuItem) {

mobile/android/base/resources/drawable/action_bar_button.xml

@@ -5,7 +5,8 @@
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <item android:state_pressed="true">
+    <item android:state_pressed="true"
+          android:state_enabled="true">
         <shape>
             <solid android:color="@color/highlight" />
         </shape>