chrome: Cleanup class/struct forward declarations

chrome/browser/notifications/message_center_settings_controller.h

 // Copyright (c) 2013 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_NOTIFICATIONS_MESSAGE_CENTER_SETTINGS_CONTROLLER_H_
 #define CHROME_BROWSER_NOTIFICATIONS_MESSAGE_CENTER_SETTINGS_CONTROLLER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 12 matching lines @@
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "ui/message_center/notifier_settings.h"
 
 #if defined(OS_CHROMEOS)
 #include "components/user_manager/user_manager.h"
 #endif
 
-class Profile;
 class NotifierSource;
 
-namespace base {
-class CancelableTaskTracker;
-}
-
-namespace favicon_base {
-struct FaviconImageResult;
-}
-
 namespace message_center {
 class ProfileNotifierGroup;
 }
 
 // The class to bridge between the settings UI of notifiers and the preference
 // storage.
 class MessageCenterSettingsController
     : public message_center::NotifierSettingsProvider,
       public content::NotificationObserver,
       public ProfileAttributesStorage::Observer,
@@ skipping 85 matching lines @@
   content::NotificationRegistrar registrar_;
 
   ProfileAttributesStorage& profile_attributes_storage_;
 
   base::WeakPtrFactory<MessageCenterSettingsController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterSettingsController);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_MESSAGE_CENTER_SETTINGS_CONTROLLER_H_