Standardize usage of virtual/override/final specifiers.

ash/system/locale/locale_notification_controller.h

Index: ash/system/locale/locale_notification_controller.h
diff --git a/ash/system/locale/locale_notification_controller.h b/ash/system/locale/locale_notification_controller.h
index 67edfbaa36f71044d38211523b6bedecbda5d951..a347aae583412a4db52c9ede3b835bd845d39881 100644
--- a/ash/system/locale/locale_notification_controller.h
+++ b/ash/system/locale/locale_notification_controller.h
@@ -17,14 +17,14 @@ namespace ash {
 class LocaleNotificationController : public LocaleObserver {
  public:
   LocaleNotificationController();
-  virtual ~LocaleNotificationController();
+  ~LocaleNotificationController() override;
 
  private:
   // Overridden from LocaleObserver.
-  virtual void OnLocaleChanged(LocaleObserver::Delegate* delegate,
-                               const std::string& cur_locale,
-                               const std::string& from_locale,
-                               const std::string& to_locale) override;
+  void OnLocaleChanged(LocaleObserver::Delegate* delegate,
+                       const std::string& cur_locale,
+                       const std::string& from_locale,
+                       const std::string& to_locale) override;
 
   LocaleObserver::Delegate* delegate_;
   std::string cur_locale_;