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

content/browser/service_worker/service_worker_registration_handle.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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 30 matching lines @@
   void IncrementRefCount();
   void DecrementRefCount();
 
   int provider_id() const { return provider_id_; }
   int handle_id() const { return handle_id_; }
 
   ServiceWorkerRegistration* registration() { return registration_.get(); }
 
  private:
   // ServiceWorkerRegistration::Listener overrides.
-  virtual void OnVersionAttributesChanged(
+  void OnVersionAttributesChanged(
       ServiceWorkerRegistration* registration,
       ChangedVersionAttributesMask changed_mask,
       const ServiceWorkerRegistrationInfo& info) override;
-  virtual void OnRegistrationFailed(
-      ServiceWorkerRegistration* registration) override;
-  virtual void OnUpdateFound(
-      ServiceWorkerRegistration* registration) override;
+  void OnRegistrationFailed(ServiceWorkerRegistration* registration) override;
+  void OnUpdateFound(ServiceWorkerRegistration* registration) override;
 
   // Sets the corresponding version field to the given version or if the given
   // version is NULL, clears the field.
   void SetVersionAttributes(
       ServiceWorkerVersion* installing_version,
       ServiceWorkerVersion* waiting_version,
       ServiceWorkerVersion* active_version);
 
   // Clears all version fields.
   void ClearVersionAttributes();
 
   base::WeakPtr<ServiceWorkerContextCore> context_;
   ServiceWorkerDispatcherHost* dispatcher_host_;
   const int provider_id_;
   const int handle_id_;
   int ref_count_;  // Created with 1.
 
   scoped_refptr<ServiceWorkerRegistration> registration_;
   scoped_refptr<ServiceWorkerVersion> installing_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;
   scoped_refptr<ServiceWorkerVersion> active_version_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistrationHandle);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_