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

chrome/browser/notifications/sync_notifier/chrome_notifier_service_factory.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_SYNC_NOTIFIER_CHROME_NOTIFIER_SERVICE_FACTORY_H_
 #define CHROME_BROWSER_NOTIFICATIONS_SYNC_NOTIFIER_CHROME_NOTIFIER_SERVICE_FACTORY_H_
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
@@ skipping 16 matching lines @@
   // Based on command line switches, make the call to use SyncedNotifications or
   // not.
   // TODO(petewil): Remove this when the SyncedNotifications feature is ready
   // to be turned on by default, and just use a disable switch instead then.
   static bool UseSyncedNotifications(base::CommandLine* command_line);
 
  private:
   friend struct DefaultSingletonTraits<ChromeNotifierServiceFactory>;
 
   ChromeNotifierServiceFactory();
-  virtual ~ChromeNotifierServiceFactory();
+  ~ChromeNotifierServiceFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  virtual KeyedService* BuildServiceInstanceFor(
+  KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* profile) const override;
 };
 
 }  // namespace notifier
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_SYNC_NOTIFIER_CHROME_NOTIFIER_SERVICE_FACTORY_H_