Standardize usage of virtual/override/final in content/

content/shell/renderer/shell_content_renderer_client.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 CONTENT_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/content_renderer_client.h"
 
 namespace web_cache {
 class WebCacheRenderProcessObserver;
 }
 
 namespace content {
 
 class WebTestProxyBase;
 
 class ShellContentRendererClient : public ContentRendererClient {
  public:
   ShellContentRendererClient();
-  virtual ~ShellContentRendererClient();
+  ~ShellContentRendererClient() override;
 
   // ContentRendererClient implementation.
-  virtual void RenderThreadStarted() override;
-  virtual void RenderViewCreated(RenderView* render_view) override;
+  void RenderThreadStarted() override;
+  void RenderViewCreated(RenderView* render_view) override;
 
   // TODO(mkwst): These toggle based on the kEnablePepperTesting flag. Do we
   // need that outside of layout tests?
-  virtual bool IsPluginAllowedToUseCompositorAPI(const GURL& url) override;
-  virtual bool IsPluginAllowedToUseVideoDecodeAPI(const GURL& url) override;
-  virtual bool IsPluginAllowedToUseDevChannelAPIs() override;
+  bool IsPluginAllowedToUseCompositorAPI(const GURL& url) override;
+  bool IsPluginAllowedToUseVideoDecodeAPI(const GURL& url) override;
+  bool IsPluginAllowedToUseDevChannelAPIs() override;
 
  private:
   scoped_ptr<web_cache::WebCacheRenderProcessObserver> web_cache_observer_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_