ash: Update app list button.

ash/test/launcher_view_test_api.h

 // Copyright (c) 2012 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.
 
 #ifndef ASH_TEST_LAUNCHER_VIEW_TEST_API_H_
 #define ASH_TEST_LAUNCHER_VIEW_TEST_API_H_
 
 #include "base/basictypes.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace ash {
 
 namespace internal {
+class AppListButton;
 class LauncherButton;
 class LauncherView;
 }
 
 namespace test {
 
 // Use the api in this class to test LauncherView.
 class LauncherViewTestAPI {
  public:
   explicit LauncherViewTestAPI(internal::LauncherView* launcher_view);
   ~LauncherViewTestAPI();
 
   // Number of icons displayed.
   int GetButtonCount();
 
   // Retrieve the button at |index|.
   internal::LauncherButton* GetButton(int index);
 
   // Last visible button index.
   int GetLastVisibleIndex();
 
   // Gets current/ideal bounds for button at |index|.
   const gfx::Rect& GetBoundsByIndex(int index);
   const gfx::Rect& GetIdealBoundsByIndex(int index);
 
+  // Gets the app list button.
+  internal::AppListButton* GetAppListButton();
+
   // Returns true if overflow button is visible.
   bool IsOverflowButtonVisible();
 
   // Makes launcher view show its overflow bubble.
   void ShowOverflowBubble();
 
   // Sets animation duration in milliseconds for test.
   void SetAnimationDuration(int duration_ms);
 
   // Runs message loop and waits until all add/remove animations are done.
   void RunMessageLoopUntilAnimationsDone();
 
  private:
   internal::LauncherView* launcher_view_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherViewTestAPI);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_LAUNCHER_VIEW_TEST_API_H_