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

content/renderer/shared_worker_repository.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_RENDERER_SHARED_WORKER_REPOSITORY_H_
 #define CONTENT_RENDERER_SHARED_WORKER_REPOSITORY_H_
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "third_party/WebKit/public/web/WebContentSecurityPolicy.h"
 #include "third_party/WebKit/public/web/WebSharedWorkerRepositoryClient.h"
 
 namespace content {
 
 class RenderFrameImpl;
 
 class SharedWorkerRepository : public RenderFrameObserver,
                                public blink::WebSharedWorkerRepositoryClient {
  public:
   explicit SharedWorkerRepository(RenderFrameImpl* render_frame);
-  virtual ~SharedWorkerRepository();
+  ~SharedWorkerRepository() override;
 
   // WebSharedWorkerRepositoryClient overrides.
   virtual blink::WebSharedWorkerConnector* createSharedWorkerConnector(
       const blink::WebURL& url,
       const blink::WebString& name,
       DocumentID document_id,
       const blink::WebString& content_security_policy,
       blink::WebContentSecurityPolicyType) override;
   virtual void documentDetached(DocumentID document_id) override;
 
  private:
   std::set<DocumentID> documents_with_workers_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedWorkerRepository);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SHARED_WORKER_REPOSITORY_H_