Add OVERRIDE to chrome/browser/.

chrome/browser/notifications/notification_ui_manager.h

Index: chrome/browser/notifications/notification_ui_manager.h
diff --git a/chrome/browser/notifications/notification_ui_manager.h b/chrome/browser/notifications/notification_ui_manager.h
index 60605c4b336fb7ecc013d2bf6877bf1b23d7a05c..9040595e3d5e55d74c406102881d2efd1312866a 100644
--- a/chrome/browser/notifications/notification_ui_manager.h
+++ b/chrome/browser/notifications/notification_ui_manager.h
@@ -90,7 +90,7 @@ class NotificationUIManager
   // 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.
@@ -100,7 +100,7 @@ class NotificationUIManager
   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.