Add support for highlighting menu items

chrome/android/java/res/layout/toolbar_phone_common.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2016 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <!-- The toolbar containing the URL bar, back button, and NTP button.
 -->
 <merge xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto">
 
@@ skipping 32 matching lines @@
             android:layout_height="match_parent" />
 
         <ImageButton android:id="@+id/tab_switcher_button"
             style="@style/ToolbarButton"
             android:layout_gravity="top"
             android:contentDescription="@string/accessibility_toolbar_btn_tabswitcher_toggle_default" />
 
         <FrameLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:id="@+id/menu_button_wrapper" >
+            android:id="@+id/menu_button_wrapper">
 
             <org.chromium.chrome.browser.widget.TintedImageButton
                 android:id="@+id/menu_button"
                 style="@style/ToolbarMenuButtonPhone"
                 android:src="@drawable/btn_menu"
                 android:contentDescription="@string/accessibility_toolbar_btn_menu" />
 
             <ImageView
                 android:id="@+id/menu_badge"
                 style="@style/ToolbarMenuButtonPhone"
                 android:src="@drawable/badge_update_dark"
                 android:contentDescription="@null"
                 android:importantForAccessibility="no"
                 android:visibility="invisible" />
         </FrameLayout>
     </LinearLayout>
 
 </merge>