Adding browsable prebuilt samples for march push

Change-Id: I952db10d9c9acb4940db08a07789347ea2effe4d

samples/browseable/MediaRouter/res/menu/sample_media_router_menu.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 Google Inc.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item android:id="@+id/media_route_menu_item"
+        android:title="@string/media_route_menu_title"
+        app:showAsAction="always"
+        app:actionProviderClass="android.support.v7.app.MediaRouteActionProvider"/>
+</menu>