Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/app_mode.

chrome/browser/chromeos/app_mode/kiosk_mode_idle_app_name_notification.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_CHROMEOS_APP_MODE_KIOSK_MODE_IDLE_APP_NAME_NOTIFICATION_H_
 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_MODE_IDLE_APP_NAME_NOTIFICATION_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer/timer.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "ui/base/user_activity/user_activity_observer.h"
 
 namespace chromeos {
 
 class IdleAppNameNotificationView;
 
 class KioskModeIdleAppNameNotification : public ui::UserActivityObserver,
                                          public PowerManagerClient::Observer {
  public:
   static void Initialize();
 
   static void Shutdown();
 
   KioskModeIdleAppNameNotification();
-  virtual ~KioskModeIdleAppNameNotification();
+  ~KioskModeIdleAppNameNotification() override;
 
  private:
   // Initialize idle app message when KioskModeHelper is initialized.
   void Setup();
 
   // ui::UserActivityObserver overrides:
-  virtual void OnUserActivity(const ui::Event* event) override;
+  void OnUserActivity(const ui::Event* event) override;
 
   // PowerManagerClient::Observer overrides:
-  virtual void SuspendDone(const base::TimeDelta& sleep_duration) override;
+  void SuspendDone(const base::TimeDelta& sleep_duration) override;
 
   // Begins listening for user activity and calls ResetTimer().
   void Start();
 
   // Resets |timer_| to fire when the application idle message should be shown.
   void ResetTimer();
 
   // Invoked by |timer_| to display the application idle message.
   void OnTimeout();
 
   base::OneShotTimer<KioskModeIdleAppNameNotification> timer_;
 
   // If set the notification should get shown upon next user activity.
   bool show_notification_upon_next_user_activity_;
 
   // The notification object which owns and shows the notification.
   scoped_ptr<IdleAppNameNotificationView> notification_;
 
   DISALLOW_COPY_AND_ASSIGN(KioskModeIdleAppNameNotification);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_MODE_IDLE_APP_NAME_NOTIFICATION_H_