Add TraySms for SMS messages.

ash/system/tray/system_tray_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_TRAY_SYSTEM_TRAY_BUBBLE_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_
 #pragma once
 
 #include "ash/system/user/login_status.h"
 #include "base/base_export.h"
@@ skipping 20 matching lines @@
   virtual ~SystemTrayBubbleView();
 
   void SetBubbleBorder(views::BubbleBorder* border);
 
   void UpdateAnchor();
 
   // Called when the host is destroyed.
   void reset_host() { host_ = NULL; }
 
  private:
+  friend class SystemTrayBubble;
+
   // Overridden from views::BubbleDelegateView.
   virtual void Init() OVERRIDE;
   virtual gfx::Rect GetAnchorRect() OVERRIDE;
   // Overridden from views::View.
   virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
   virtual bool CanActivate() const OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE;
@@ skipping 67 matching lines @@
   int autoclose_delay_;
   base::OneShotTimer<SystemTrayBubble> autoclose_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayBubble);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_