Eliminate ash::internal namespace

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_
 
 #include "ash/system/user/login_status.h"
 #include "base/base_export.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer/timer.h"
 #include "ui/views/bubble/tray_bubble_view.h"
 
 #include <vector>
 
 namespace ash {
-
 class SystemTray;
 class SystemTrayItem;
 
-namespace internal {
-
 class SystemTrayBubble {
  public:
   enum BubbleType {
     BUBBLE_TYPE_DEFAULT,
     BUBBLE_TYPE_DETAILED,
     BUBBLE_TYPE_NOTIFICATION
   };
 
   SystemTrayBubble(ash::SystemTray* tray,
                    const std::vector<ash::SystemTrayItem*>& items,
@@ skipping 36 matching lines @@
   views::TrayBubbleView* bubble_view_;
   std::vector<ash::SystemTrayItem*> items_;
   BubbleType bubble_type_;
 
   int autoclose_delay_;
   base::OneShotTimer<SystemTrayBubble> autoclose_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayBubble);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_