Move NotificationDelegate into message_center.

ui/message_center/fake_message_center.h

Index: ui/message_center/fake_message_center.h
diff --git a/ui/message_center/fake_message_center.h b/ui/message_center/fake_message_center.h
index bf7d435d02e77859cabb8a87b10d4ee57773b3af..15cad79aca750ac3d7c0b05fd8d15025b15390e6 100644
--- a/ui/message_center/fake_message_center.h
+++ b/ui/message_center/fake_message_center.h
@@ -9,6 +9,8 @@
 
 namespace message_center {
 
+class NotificationDelegate;
+
 // MessageCenter implementation of doing nothing. Useful for tests.
 class FakeMessageCenter : public MessageCenter {
  public:
@@ -26,20 +28,20 @@ class FakeMessageCenter : public MessageCenter {
   virtual bool IsQuietMode() const OVERRIDE;
   virtual const NotificationList::Notifications& GetNotifications() OVERRIDE;
   virtual NotificationList::PopupNotifications GetPopupNotifications() OVERRIDE;
-  virtual void AddNotification(
-      NotificationType type,
-      const std::string& id,
-      const string16& title,
-      const string16& message,
-      const string16& display_source,
-      const std::string& extension_id,
-      const base::DictionaryValue* optional_fields) OVERRIDE;
-  virtual void UpdateNotification(
-      const std::string& old_id,
-      const std::string& new_id,
-      const string16& title,
-      const string16& message,
-      const base::DictionaryValue* optional_fields) OVERRIDE;
+  virtual void AddNotification(NotificationType type,
+                               const std::string& id,
+                               const string16& title,
+                               const string16& message,
+                               const string16& display_source,
+                               const std::string& extension_id,
+                               const base::DictionaryValue* optional_fields,
+                               NotificationDelegate* delegate) OVERRIDE;
+  virtual void UpdateNotification(const std::string& old_id,
+                                  const std::string& new_id,
+                                  const string16& title,
+                                  const string16& message,
+                                  const base::DictionaryValue* optional_fields)
+      OVERRIDE;
   virtual void RemoveNotification(const std::string& id, bool by_user) OVERRIDE;
   virtual void RemoveAllNotifications(bool by_user) OVERRIDE;
   virtual void SetNotificationIcon(const std::string& notification_id,