Add OVERRIDE to chrome/browser/.

chrome/browser/notifications/notification_ui_manager.h

 // Copyright (c) 2011 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_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 72 matching lines @@
   // Used only for automation/testing.
   void GetQueuedNotificationsForTesting(
       std::vector<const Notification*>* notifications);
 
  private:
   explicit NotificationUIManager(PrefService* local_state);
 
   // content::NotificationObserver override.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
   // Attempts to display notifications from the show_queue if the user
   // is active.
   void CheckAndShowNotifications();
 
   // Attempts to display notifications from the show_queue.
   void ShowNotifications();
 
   // BalloonCollectionObserver implementation.
-  virtual void OnBalloonSpaceChanged();
+  virtual void OnBalloonSpaceChanged() OVERRIDE;
 
   // Replace an existing notification with this one if applicable;
   // returns true if the replacement happened.
   bool TryReplacement(const Notification& notification);
 
   // Checks the user state to decide if we want to show the notification.
   void CheckUserState();
 
   // An owned pointer to the collection of active balloons.
   scoped_ptr<BalloonCollection> balloon_collection_;
 
   // A queue of notifications which are waiting to be shown.
   typedef std::deque<QueuedNotification*> NotificationDeque;
   NotificationDeque show_queue_;
 
   // Registrar for the other kind of notifications (event signaling).
   content::NotificationRegistrar registrar_;
 
   // Prefs listener for the position preference.
   IntegerPrefMember position_pref_;
 
   // Used by screen-saver and full-screen handling support.
   bool is_user_active_;
   base::RepeatingTimer<NotificationUIManager> user_state_check_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationUIManager);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_