Eliminate ash::internal namespace

ash/system/tray/tray_image_item.cc

 // 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.
 
 #include "ash/system/tray/tray_image_item.h"
 
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/tray_item_view.h"
 #include "ash/system/tray/tray_utils.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
 
 TrayImageItem::TrayImageItem(SystemTray* system_tray, int resource_id)
     : SystemTrayItem(system_tray),
       resource_id_(resource_id),
       tray_view_(NULL) {
 }
 
 TrayImageItem::~TrayImageItem() {}
 
 views::View* TrayImageItem::tray_view() {
@@ skipping 55 matching lines @@
       break;
     case ash::SHELF_ALIGNMENT_LEFT:
     case ash::SHELF_ALIGNMENT_RIGHT:
       layout = views::BoxLayout::kVertical;
       break;
   }
   tray_view_->SetLayoutManager(new views::BoxLayout(layout, 0, 0, 0));
   tray_view_->Layout();
 }
 
-}  // namespace internal
 }  // namespace ash