Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h

 // Copyright 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 CHROME_BROWSER_UI_WEBUI_USER_ACTIONS_USER_ACTIONS_UI_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_USER_ACTIONS_USER_ACTIONS_UI_HANDLER_H_
 
 #include "base/metrics/user_metrics.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 // UI Handler for chrome://user-actions/
 // It listens to user action notifications and passes those notifications
 // into the Javascript to update the page.
 class UserActionsUIHandler : public content::WebUIMessageHandler {
  public:
   UserActionsUIHandler();
-  virtual ~UserActionsUIHandler();
+  ~UserActionsUIHandler() override;
 
   // WebUIMessageHandler implementation:
   // Does nothing for now.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   void OnUserAction(const std::string& action);
 
   base::ActionCallback action_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(UserActionsUIHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_USER_ACTIONS_USER_ACTIONS_UI_HANDLER_H_