Eliminate ash::internal namespace

ash/system/tray/tray_notification_view.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_TRAY_NOTIFICATION_VIEW_H_
 #define ASH_SYSTEM_TRAY_TRAY_NOTIFICATION_VIEW_H_
 
 #include "base/timer/timer.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/slide_out_view.h"
 
 namespace gfx {
 class ImageSkia;
 }
 
 namespace views {
 class ImageView;
 }
 
 namespace ash {
-
 class SystemTrayItem;
 
-namespace internal {
-
 // A view for closable notification views, laid out like:
 //  -------------------
 // | icon  contents  x |
 //  ----------------v--
 // The close button will call OnClose() when clicked.
 class TrayNotificationView : public views::SlideOutView,
                              public views::ButtonListener {
  public:
   // If icon_id is 0, no icon image will be set. SetIconImage can be called
   // to later set the icon image.
@@ skipping 49 matching lines @@
   SystemTrayItem* owner_;
   int icon_id_;
   views::ImageView* icon_;
 
   int autoclose_delay_;
   base::OneShotTimer<TrayNotificationView> autoclose_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayNotificationView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_NOTIFICATION_VIEW_H_