Add support for highlighting menu items

chrome/android/java/src/org/chromium/chrome/browser/toolbar/Toolbar.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.toolbar;
 
 import android.graphics.Rect;
 import android.view.View;
 
 import org.chromium.chrome.browser.compositor.layouts.LayoutUpdateHost;
@@ skipping 61 matching lines @@
     boolean setForceTextureCapture(boolean forceTextureCapture);
 
     /**
      * Sets the {@link LayoutUpdateHost} for use in requesting an update when the toolbar texture
      * needs to be recaptured.
      * @param layoutUpdateHost The {@link LayoutUpdateHost} for requesting updates.
      */
     void setLayoutUpdateHost(LayoutUpdateHost layoutUpdateHost);
 
     /**
+     * Sets whether or not the menu button should be highlighted.
+     * @param highlight Whether or not the menu button should be highlighted.
+     */
+    void setMenuButtonHighlight(boolean highlight);
+
+    /**
      * Show the update badge on the app menu button. Will have no effect if there is no app menu
      * button for the current Activity.
      */
     void showAppMenuUpdateBadge();
 
     /**
      * Whether the update badge that is displayed on top of the app menu button is showing.
      */
     boolean isShowingAppMenuUpdateBadge();
 
     /**
      * Remove the update badge on the app menu button. Initially the badge is invisible so that it
      * gets measured and the tab switcher animation looks correct when the badge is first shown. If
      * the badge will never be shown or should no longer be shown, this method should be called to
      * change the visibility to gone to avoid unnecessary layout work. The disappearance of the
      * badge is optionally animated if it was previously visible.
      *
      * @param animate Whether the removal of the badge should be animated.
      */
     void removeAppMenuUpdateBadge(boolean animate);
 }