Implement Non-Closable Notification

ui/message_center/fake_message_center.h

 // Copyright 2013 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_FAKE_MESSAGE_CENTER_H_
 #define UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 24 matching lines @@
       const std::string& id) override;
   const NotificationList::Notifications& GetVisibleNotifications() override;
   NotificationList::PopupNotifications GetPopupNotifications() override;
   void AddNotification(scoped_ptr<Notification> notification) override;
   void UpdateNotification(const std::string& old_id,
                           scoped_ptr<Notification> new_notification) override;
 
   void RemoveNotification(const std::string& id, bool by_user) override;
   void RemoveAllNotifications(bool by_user) override;
   void RemoveAllVisibleNotifications(bool by_user) override;
+  void RemoveAllClosableNotifications(bool by_user) override;
   void SetNotificationIcon(const std::string& notification_id,
                            const gfx::Image& image) override;
 
   void SetNotificationImage(const std::string& notification_id,
                             const gfx::Image& image) override;
 
   void SetNotificationButtonIcon(const std::string& notification_id,
                                  int button_index,
                                  const gfx::Image& image) override;
   void DisableNotificationsByNotifier(const NotifierId& notifier_id) override;
@@ skipping 20 matching lines @@
 
  private:
   const NotificationList::Notifications empty_notifications_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeMessageCenter);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_H_