Standardize usage of virtual/override/final in content/browser/

content/browser/service_worker/service_worker_registration.h

 // Copyright 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
@@ skipping 92 matching lines @@
   // [[ClearRegistration]] algorithm.
   void AbortPendingClear(const StatusCallback& callback);
 
   // The time of the most recent update check.
   base::Time last_update_check() const { return last_update_check_; }
   void set_last_update_check(base::Time last) { last_update_check_ = last; }
 
  private:
   friend class base::RefCounted<ServiceWorkerRegistration>;
 
-  virtual ~ServiceWorkerRegistration();
+  ~ServiceWorkerRegistration() override;
 
   void SetVersionInternal(
       ServiceWorkerVersion* version,
       scoped_refptr<ServiceWorkerVersion>* data_member,
       int change_flag);
   void UnsetVersionInternal(
       ServiceWorkerVersion* version,
       ChangedVersionAttributesMask* mask);
 
   // ServiceWorkerVersion::Listener override.
-  virtual void OnNoControllees(ServiceWorkerVersion* version) override;
+  void OnNoControllees(ServiceWorkerVersion* version) override;
 
   // This method corresponds to the [[Activate]] algorithm.
   void ActivateWaitingVersion();
   void OnActivateEventFinished(
       ServiceWorkerVersion* activating_version,
       ServiceWorkerStatusCode status);
   void OnDeleteFinished(ServiceWorkerStatusCode status);
 
   // This method corresponds to the [[ClearRegistration]] algorithm.
   void Clear();
@@ skipping 14 matching lines @@
   scoped_refptr<ServiceWorkerVersion> installing_version_;
   ObserverList<Listener> listeners_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_