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

chrome/browser/ui/webui/options/easy_unlock_handler.h

 // Copyright 2014 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_OPTIONS_EASY_UNLOCK_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_EASY_UNLOCK_HANDLER_H_
 
 #include "base/macros.h"
 #include "chrome/browser/signin/easy_unlock_service_observer.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 
 namespace options {
 
 class EasyUnlockHandler : public OptionsPageUIHandler,
                           public EasyUnlockServiceObserver {
  public:
   EasyUnlockHandler();
-  virtual ~EasyUnlockHandler();
+  ~EasyUnlockHandler() override;
 
   // OptionsPageUIHandler
-  virtual void InitializeHandler() override;
-  virtual void GetLocalizedValues(base::DictionaryValue* values) override;
+  void InitializeHandler() override;
+  void GetLocalizedValues(base::DictionaryValue* values) override;
 
   // WebUIMessageHandler
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
   // EasyUnlockServiceObserver
-  virtual void OnTurnOffOperationStatusChanged() override;
+  void OnTurnOffOperationStatusChanged() override;
 
  private:
   void SendTurnOffOperationStatus();
 
   // JS callbacks.
   void HandleGetTurnOffFlowStatus(const base::ListValue* args);
   void HandleRequestTurnOff(const base::ListValue* args);
   void HandlePageDismissed(const base::ListValue* args);
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_EASY_UNLOCK_HANDLER_H_