Message center re-organized

ui/message_center/views/message_center_view.h

Index: ui/message_center/views/message_center_view.h
diff --git a/ui/message_center/views/message_center_view.h b/ui/message_center/views/message_center_view.h
index 593c24f462685792ab9013c0792ab0f26341c4e0..e7af0bb4741b8f3d99a7f8ba43c8afe4ce132c08 100644
--- a/ui/message_center/views/message_center_view.h
+++ b/ui/message_center/views/message_center_view.h
@@ -73,7 +73,8 @@ class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
   MessageCenterView(MessageCenter* message_center,
                     MessageCenterTray* tray,
                     int max_height,
-                    bool initially_settings_visible);
+                    bool initially_settings_visible,
+                    bool buttons_at_top = false);
   virtual ~MessageCenterView();
 
   void SetNotifications(const NotificationList::Notifications& notifications);
@@ -120,6 +121,7 @@ class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
   NotifierSettingsView* settings_view_;
   MessageCenterButtonBar* button_bar_;
   views::View* no_notifications_message_view_;
+  bool buttons_at_top_;
 
   // Data for transition animation between settings view and message list.
   bool settings_visible_;