Standardize usage of virtual/override/final in components/

components/plugins/renderer/plugin_placeholder.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 COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_
 #define COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_
 
 #include "components/plugins/renderer/webview_plugin.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/renderer/context_menu_client.h"
@@ skipping 25 matching lines @@
 
  protected:
   // |render_frame| and |frame| are weak pointers. If either one is going away,
   // our |plugin_| will be destroyed as well and will notify us.
   PluginPlaceholder(content::RenderFrame* render_frame,
                     blink::WebLocalFrame* frame,
                     const blink::WebPluginParams& params,
                     const std::string& html_data,
                     GURL placeholderDataUrl);
 
-  virtual ~PluginPlaceholder();
+  ~PluginPlaceholder() override;
 
   void OnLoadBlockedPlugins(const std::string& identifier);
   void OnSetIsPrerendering(bool is_prerendering);
 
   void SetMessage(const base::string16& message);
   void SetPluginInfo(const content::WebPluginInfo& plugin_info);
   const content::WebPluginInfo& GetPluginInfo() const;
   void SetIdentifier(const std::string& identifier);
   blink::WebLocalFrame* GetFrame();
   const blink::WebPluginParams& GetPluginParams() const;
   bool LoadingAllowed() const { return allow_loading_; }
 
   // Replace this placeholder with a different plugin (which could be
   // a placeholder again).
   void ReplacePlugin(blink::WebPlugin* new_plugin);
 
   // Hide this placeholder.
   void HidePlugin();
 
   // Load the blocked plugin.
   void LoadPlugin();
 
   // gin::Wrappable method:
-  virtual gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
+  gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) override;
 
  private:
   // WebViewPlugin::Delegate methods:
-  virtual void ShowContextMenu(const blink::WebMouseEvent&) override;
-  virtual void PluginDestroyed() override;
+  void ShowContextMenu(const blink::WebMouseEvent&) override;
+  void PluginDestroyed() override;
 
   // RenderFrameObserver methods:
-  virtual void OnDestruct() override;
+  void OnDestruct() override;
 
   // Javascript callbacks:
 
   // Load the blocked plugin by calling LoadPlugin().
   void LoadCallback();
 
   // Hide the blocked plugin by calling HidePlugin().
   void HideCallback();
 
   void DidFinishLoadingCallback();
@@ skipping 16 matching lines @@
   bool hidden_;
   bool finished_loading_;
   std::string identifier_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginPlaceholder);
 };
 
 }  // namespace plugins
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_