Invokes NotificationDelegate::Close in message center.

chrome/browser/notifications/message_center_notification_manager.h

Index: chrome/browser/notifications/message_center_notification_manager.h
diff --git a/chrome/browser/notifications/message_center_notification_manager.h b/chrome/browser/notifications/message_center_notification_manager.h
index be2621e039998fdb5c14ecdfb17435c705321127..4589645fde05ed0ed0c0f4113947586361c19e1f 100644
--- a/chrome/browser/notifications/message_center_notification_manager.h
+++ b/chrome/browser/notifications/message_center_notification_manager.h
@@ -192,8 +192,7 @@ class MessageCenterNotificationManager
   // Helpers that add/remove the notification from local map and MessageCenter.
   // They take ownership of profile_notification object.
   void AddProfileNotification(ProfileNotification* profile_notification);
-  void RemoveProfileNotification(ProfileNotification* profile_notification,
-                                 bool by_user);
+  void RemoveProfileNotification(ProfileNotification* profile_notification);
 
   // Returns the ProfileNotification for the |id|, or NULL if no such
   // notification is found.