chrome: Cleanup class/struct forward declarations

chrome/browser/extensions/window_controller_list.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_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_
 #define CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_
 
 #include <list>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/window_controller.h"
 
-class Profile;
 class UIThreadExtensionFunction;
 
 namespace extensions {
 
 class WindowControllerListObserver;
 
 // Class to maintain a list of WindowControllers.
 class WindowControllerList {
  public:
   typedef std::list<WindowController*> ControllerList;
@@ skipping 44 matching lines @@
   ControllerList windows_;
 
   base::ObserverList<WindowControllerListObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowControllerList);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_