chrome: Cleanup class/struct forward declarations

chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_v2app.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 CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_APP_MENU_ITEM_V2APP_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_APP_MENU_ITEM_V2APP_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item.h"
 
-namespace gfx {
-class image;
-}
-
 class ChromeLauncherController;
 
 // A menu item controller for a running V2 application. It gets created when an
 // application list gets created. It's main purpose is to add the activation
 // method to the |ChromeLauncherAppMenuItem| class.
 class ChromeLauncherAppMenuItemV2App : public ChromeLauncherAppMenuItem {
  public:
   ChromeLauncherAppMenuItemV2App(
       const base::string16 title,
       const gfx::Image* icon,
@@ skipping 13 matching lines @@
   // The application ID.
   const std::string app_id_;
 
   // The index for the given application.
   const int app_index_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherAppMenuItemV2App);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_APP_MENU_ITEM_V2APP_H_