use system menu

    On phones with hardware menu key, use the framework's
    menu
    Also fixes:
    Bug: 5051899
    remove overflow button from bar if menu key is present
    Nav options are not visible on tab switcher

Change-Id: I5b55934a392a76f9d9ef16e3bf5c71f27b88d69a
diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index d1445d8..b270dea 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -35,6 +35,7 @@
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.Menu;
+import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -653,6 +654,11 @@
     }
 
     @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        return false;
+    }
+
+    @Override
     public void onOptionsMenuClosed(boolean inLoad) {
     }