mash: Remove shelf app menu item objects.

chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_browser.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_BROWSER_H_
-#define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_APP_MENU_ITEM_BROWSER_H_
-
-#include "ash/public/cpp/shelf_application_menu_item.h"
-#include "base/macros.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-class Browser;
-
-// A shelf application menu item for a running browser.
-class ChromeLauncherAppMenuItemBrowser : public ash::ShelfApplicationMenuItem,
-                                         public content::NotificationObserver {
- public:
-  ChromeLauncherAppMenuItemBrowser(const base::string16 title,
-                                   const gfx::Image* icon,
-                                   Browser* browser);
-  ~ChromeLauncherAppMenuItemBrowser() override;
-
-  // ash::ShelfApplicationMenuItem:
-  void Execute(int event_flags) override;
-
- private:
-  // content::NotificationObserver.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  // The browser which is associated which this item.
-  Browser* browser_;
-
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChromeLauncherAppMenuItemBrowser);
-};
-
-#endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_APP_MENU_ITEM_BROWSER_H_