Standardize usage of virtual/override/final in content/

content/shell/renderer/test_runner/test_plugin.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_SHELL_RENDERER_TEST_RUNNER_TEST_PLUGIN_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_TEST_PLUGIN_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 27 matching lines @@
 // primitive-color: black (default), red, green, blue.
 // opacity: [0.0 - 1.0]. Default is 1.0.
 //
 // Whether the plugin accepts touch events or not can be customized using the
 // 'accepts-touch' plugin parameter (defaults to false).
 class TestPlugin : public blink::WebPlugin, public cc::TextureLayerClient {
  public:
   static TestPlugin* create(blink::WebFrame* frame,
                             const blink::WebPluginParams& params,
                             WebTestDelegate* delegate);
-  virtual ~TestPlugin();
+  ~TestPlugin() override;
 
   static const blink::WebString& MimeType();
   static const blink::WebString& CanCreateWithoutRendererMimeType();
   static const blink::WebString& PluginPersistsMimeType();
   static bool IsSupportedMimeType(const blink::WebString& mime_type);
 
   // WebPlugin methods:
   virtual bool initialize(blink::WebPluginContainer* container);
   virtual void destroy();
   virtual NPObject* scriptableObject();
@@ skipping 19 matching lines @@
   virtual void didFinishLoading() {}
   virtual void didFailLoading(const blink::WebURLError& error) {}
   virtual void didFinishLoadingFrameRequest(const blink::WebURL& url,
                                             void* notify_data) {}
   virtual void didFailLoadingFrameRequest(const blink::WebURL& url,
                                           void* notify_data,
                                           const blink::WebURLError& error) {}
   virtual bool isPlaceholder();
 
   // cc::TextureLayerClient methods:
-  virtual bool PrepareTextureMailbox(
+  bool PrepareTextureMailbox(
       cc::TextureMailbox* mailbox,
       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
       bool use_shared_memory) override;
 
  private:
   TestPlugin(blink::WebFrame* frame,
              const blink::WebPluginParams& params,
              WebTestDelegate* delegate);
 
   enum Primitive { PrimitiveNone, PrimitiveTriangle };
@@ skipping 67 matching lines @@
 
   bool is_persistent_;
   bool can_create_without_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_TEST_PLUGIN_H_