Standardize usage of virtual/override/final in chrome/browser/notifications

chrome/browser/notifications/notification.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_NOTIFICATIONS_NOTIFICATION_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 30 matching lines @@
       blink::WebTextDirection dir,
       const message_center::NotifierId& notifier_id,
       const base::string16& display_source,
       const base::string16& replace_id,
       const message_center::RichNotificationData& rich_notification_data,
       NotificationDelegate* delegate);
 
   Notification(const std::string& id, const Notification& notification);
 
   Notification(const Notification& notification);
-  virtual ~Notification();
+  ~Notification() override;
   Notification& operator=(const Notification& notification);
 
   // The origin URL of the script which requested the notification.
   const GURL& origin_url() const { return origin_url_; }
 
   // A unique identifier used to update (replace) or remove a notification.
   const base::string16& replace_id() const { return replace_id_; }
 
   // Id of the delegate embedded inside this instance.
   std::string delegate_id() const { return delegate()->id(); }
 
   NotificationDelegate* delegate() const { return delegate_.get(); }
 
  private:
   // The Origin of the page/worker which created this notification.
   GURL origin_url_;
 
   // The user-supplied replace ID for the notification.
   base::string16 replace_id_;
 
   // A proxy object that allows access back to the JavaScript object that
   // represents the notification, for firing events.
   scoped_refptr<NotificationDelegate> delegate_;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_H_