Implement Non-Closable Notification

ui/message_center/views/message_center_view.h

 // Copyright (c) 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_VIEWS_MESSAGE_CENTER_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_VIEW_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 32 matching lines @@
   MessageCenterView(MessageCenter* message_center,
                     MessageCenterTray* tray,
                     int max_height,
                     bool initially_settings_visible,
                     bool top_down,
                     const base::string16& title);
   ~MessageCenterView() override;
 
   void SetNotifications(const NotificationList::Notifications& notifications);
 
-  void ClearAllNotifications();
+  void ClearAllClosableNotifications();
   void OnAllNotificationsCleared();
 
   size_t NumMessageViewsForTest() const;
 
   void SetSettingsVisible(bool visible);
   void OnSettingsChanged();
   bool settings_visible() const { return settings_visible_; }
   MessageCenterTray* tray() { return tray_; }
 
   void SetIsClosing(bool is_closing);
@@ skipping 70 matching lines @@
   bool is_closing_;
 
   scoped_ptr<MessageViewContextMenuController> context_menu_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterView);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_VIEW_H_