Standardize usage of virtual/override/final in ui/

ui/message_center/cocoa/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 UI_MESSAGE_CENTER_COCOA_SETTINGS_CONTROLLER_H_
 #define UI_MESSAGE_CENTER_COCOA_SETTINGS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #import "ui/message_center/cocoa/opaque_views.h"
 #import "ui/message_center/cocoa/settings_entry_view.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/notifier_settings.h"
 
 @class MCSettingsController;
 @class MCTrayViewController;
 
 namespace message_center {
 
 // Bridge class between C++ and Cocoa world.
 class NotifierSettingsObserverMac : public NotifierSettingsObserver {
  public:
   NotifierSettingsObserverMac(MCSettingsController* settings_controller)
       : settings_controller_(settings_controller) {}
   virtual ~NotifierSettingsObserverMac();
 
   // Overridden from NotifierSettingsObserver:
-  virtual void UpdateIconImage(const NotifierId& notifier_id,
-                               const gfx::Image& icon) override;
-  virtual void NotifierGroupChanged() override;
-  virtual void NotifierEnabledChanged(const NotifierId& notifier_id,
-                                      bool enabled) override;
+  void UpdateIconImage(const NotifierId& notifier_id,
+                       const gfx::Image& icon) override;
+  void NotifierGroupChanged() override;
+  void NotifierEnabledChanged(const NotifierId& notifier_id,
+                              bool enabled) override;
 
  private:
   MCSettingsController* settings_controller_;  // weak, owns this
 
   DISALLOW_COPY_AND_ASSIGN(NotifierSettingsObserverMac);
 };
 
 }  // namespace message_center
 
 // The view controller responsible for the settings sheet in the center.
@@ skipping 37 matching lines @@
 @end
 
 // Testing API /////////////////////////////////////////////////////////////////
 
 @interface MCSettingsController (TestingAPI)
 - (NSPopUpButton*)groupDropDownButton;
 - (NSScrollView*)scrollView;
 @end
 
 #endif  // UI_MESSAGE_CENTER_COCOA_SETTINGS_CONTROLLER_H_