Standardize usage of virtual/override/final in ui/

ui/message_center/fake_message_center_tray_delegate.h

 // Copyright 2014 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_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_
 #define UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/message_center/message_center_tray_delegate.h"
 
 namespace message_center {
 
 class MessageCenter;
 class MessageCenterTray;
 
 // A message center tray delegate which does nothing.
 class FakeMessageCenterTrayDelegate : public MessageCenterTrayDelegate {
  public:
   FakeMessageCenterTrayDelegate(MessageCenter* message_center,
                                 base::Closure quit_closure);
-  virtual ~FakeMessageCenterTrayDelegate();
+  ~FakeMessageCenterTrayDelegate() override;
 
   bool displayed_first_run_balloon() const {
     return displayed_first_run_balloon_;
   }
 
   // Overridden from MessageCenterTrayDelegate:
-  virtual void OnMessageCenterTrayChanged() override;
-  virtual bool ShowPopups() override;
-  virtual void HidePopups() override;
-  virtual bool ShowMessageCenter() override;
-  virtual void HideMessageCenter() override;
-  virtual bool ShowNotifierSettings() override;
-  virtual bool IsContextMenuEnabled() const override;
-  virtual MessageCenterTray* GetMessageCenterTray() override;
-  virtual void DisplayFirstRunBalloon() override;
+  void OnMessageCenterTrayChanged() override;
+  bool ShowPopups() override;
+  void HidePopups() override;
+  bool ShowMessageCenter() override;
+  void HideMessageCenter() override;
+  bool ShowNotifierSettings() override;
+  bool IsContextMenuEnabled() const override;
+  MessageCenterTray* GetMessageCenterTray() override;
+  void DisplayFirstRunBalloon() override;
 
  private:
   scoped_ptr<MessageCenterTray> tray_;
   base::Closure quit_closure_;
   bool displayed_first_run_balloon_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeMessageCenterTrayDelegate);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_