Revert 188217 "Switch Windows to use the MessagePopupCollection"

ui/message_center/message_center.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_MESSAGE_CENTER_MESSAGE_CENTER_H_
 #define UI_MESSAGE_CENTER_MESSAGE_CENTER_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 153 matching lines @@
   // Overridden from NotificationList::Delegate:
   virtual void SendRemoveNotification(const std::string& id,
                                       bool by_user) OVERRIDE;
   virtual void OnQuietModeChanged(bool quiet_mode) OVERRIDE;
 
  protected:
   MessageCenter();
   virtual ~MessageCenter();
 
  private:
-  FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayWinTest,
-                           ManyMessageCenterNotifications);
-  FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayWinTest, ManyPopupNotifications);
   // Calls OnMessageCenterChanged on each observer.
   void NotifyMessageCenterChanged(bool new_notification);
 
   scoped_ptr<NotificationList> notification_list_;
   ObserverList<Observer> observer_list_;
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenter);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_H_