Enable users of NotificationUIManager to specify binary images.

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 65ddc4bbd10b04c56a3d0c9bf85367aa51161b87..1d75cd9b11aeea08d76f762aa22053d48a509c63 100644
--- a/ui/message_center/fake_message_center.h
+++ b/ui/message_center/fake_message_center.h
@@ -29,20 +29,11 @@ class FakeMessageCenter : public MessageCenter {
   virtual bool HasClickedListener(const std::string& id) 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,
-                               NotificationDelegate* delegate) OVERRIDE;
+  virtual void AddNotification(scoped_ptr<Notification> notification) 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,
-                                  NotificationDelegate* delegate) OVERRIDE;
+                                  scoped_ptr<Notification> new_notification)
+      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,