The 1st patch to disambiguate message center notifications

ui/message_center/notification_list.cc

Index: ui/message_center/notification_list.cc
diff --git a/ui/message_center/notification_list.cc b/ui/message_center/notification_list.cc
index 611d4e89a432fda8d5ab333b57d7454cea3ced6d..eac4345657ed1727eed327b2df899a0dddc33a5f 100644
--- a/ui/message_center/notification_list.cc
+++ b/ui/message_center/notification_list.cc
@@ -160,10 +160,6 @@ bool NotificationList::SetNotificationButtonIcon(
   return true;
 }
 
-bool NotificationList::HasNotification(const std::string& id) {
-  return GetNotification(id) != notifications_.end();
-}
-
 bool NotificationList::HasNotificationOfType(const std::string& id,
                                              const NotificationType type) {
   Notifications::iterator iter = GetNotification(id);
@@ -271,6 +267,13 @@ void NotificationList::SetQuietMode(bool quiet_mode) {
   }
 }
 
+Notification* NotificationList::GetNotificationById(const std::string& id) {
+  Notifications::iterator iter = GetNotification(id);
+  if (iter != notifications_.end())
+    return *iter;
+  return NULL;
+}
+
 NotificationList::Notifications NotificationList::GetVisibleNotifications(
     const NotificationBlockers& blockers) const {
   Notifications result;