mash: Merge ChromeLauncherController and *Impl subclass.

chrome/browser/ui/ash/launcher/desktop_shell_launcher_context_menu.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ASH_LAUNCHER_DESKTOP_SHELL_LAUNCHER_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_DESKTOP_SHELL_LAUNCHER_CONTEXT_MENU_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 
-class ChromeLauncherControllerImpl;
+class ChromeLauncherController;
 
 namespace ash {
 struct ShelfItem;
 class WmShelf;
 }
 
 // Class for context menu which is shown when right click on desktop shell.
 class DesktopShellLauncherContextMenu : public LauncherContextMenu {
  public:
-  DesktopShellLauncherContextMenu(ChromeLauncherControllerImpl* controller,
+  DesktopShellLauncherContextMenu(ChromeLauncherController* controller,
                                   const ash::ShelfItem* item,
                                   ash::WmShelf* shelf);
   ~DesktopShellLauncherContextMenu() override;
 
  private:
   void Init();
 
   DISALLOW_COPY_AND_ASSIGN(DesktopShellLauncherContextMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_DESKTOP_SHELL_LAUNCHER_CONTEXT_MENU_H_