Remove unnecessary image downloading handler of notifications.

ui/message_center/notifier_settings.h

Index: ui/message_center/notifier_settings.h
diff --git a/ui/message_center/notifier_settings.h b/ui/message_center/notifier_settings.h
index 3e4af899c921d07ac1b0de97873107391e09cae8..cf59e8620a326f07cc5661e9a6d42e447cffbd76 100644
--- a/ui/message_center/notifier_settings.h
+++ b/ui/message_center/notifier_settings.h
@@ -13,7 +13,9 @@
 #include "ui/message_center/message_center_export.h"
 #include "url/gurl.h"
 
+class MessageCenterNotificationsTest;
 class MessageCenterTrayBridgeTest;
+class StubNotificationUIManager;
 
 namespace ash {
 class WebNotificationTrayTest;
@@ -24,6 +26,7 @@ namespace test {
 class MessagePopupCollectionTest;
 }
 
+class MessageCenterNotificationManagerTest;
 class NotifierSettingsDelegate;
 class NotifierSettingsProvider;
 
@@ -65,11 +68,14 @@ struct MESSAGE_CENTER_EXPORT NotifierId {
   std::string profile_id;
 
  private:
+  friend class ::MessageCenterNotificationsTest;

[dewittj, 2014/09/19 00:17:53]

wonder if sorting should put all the global-namespace tests first?

[Jun Mukai, 2014/09/19 00:22:29]

sorted by the namespace.  I think it's clearer in the order of same namespace ->
global namespace -> alphabetical namespace order

+  friend class MessageCenterNotificationManagerTest;
   friend class ::MessageCenterTrayBridgeTest;
   friend class MessageCenterTrayTest;
   friend class test::MessagePopupCollectionTest;
   friend class NotificationControllerTest;
   friend class PopupCollectionTest;
+  friend class ::StubNotificationUIManager;
   friend class TrayViewControllerTest;
   friend class ash::WebNotificationTrayTest;
   FRIEND_TEST_ALL_PREFIXES(PopupControllerTest, Creation);