Move ash/system/web_notification message_center to ui/

ash/system/web_notification/message_center_bubble.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 ASH_SYSTEM_WEB_NOTIFICATION_MESSAGE_CENTER_BUBBLE_H_
-#define ASH_SYSTEM_WEB_NOTIFICATION_MESSAGE_CENTER_BUBBLE_H_
-
-#include "ash/ash_export.h"
-#include "ash/system/web_notification/web_notification_bubble.h"
-#include "ash/system/web_notification/web_notification_list.h"
-
-namespace message_center {
-
-class MessageCenterContentsView;
-
-// Bubble for message center.
-class ASH_EXPORT MessageCenterBubble : public WebNotificationBubble {
- public:
-  explicit MessageCenterBubble(WebNotificationList::Delegate* delegate);
-
-  virtual ~MessageCenterBubble();
-
-  // Overridden from WebNotificationBubble.
-  virtual TrayBubbleView::InitParams GetInitParams(
-      TrayBubbleView::AnchorAlignment anchor_alignment) OVERRIDE;
-  virtual void InitializeContents(TrayBubbleView* bubble_view) OVERRIDE;
-  virtual void OnBubbleViewDestroyed() OVERRIDE;
-  virtual void UpdateBubbleView() OVERRIDE;
-  virtual void OnMouseEnteredView() OVERRIDE;
-  virtual void OnMouseExitedView() OVERRIDE;
-
-  size_t NumMessageViewsForTest() const;
-
- private:
-  MessageCenterContentsView* contents_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessageCenterBubble);
-};
-
-}  // namespace message_center
-
-#endif // ASH_SYSTEM_WEB_NOTIFICATION_MESSAGE_CENTER_BUBBLE_H_