Eliminate ash::internal namespace

ash/drag_drop/drag_image_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_DRAG_DROP_DRAG_IMAGE_VIEW_H_
 #define ASH_DRAG_DROP_DRAG_IMAGE_VIEW_H_
 
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/views/controls/image_view.h"
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // This class allows to show a (native) view always on top of everything. It
 // does this by creating a widget and setting the content as the given view. The
 // caller can then use this object to freely move / drag it around on the
 // desktop in screen coordinates.
 class DragImageView : public views::ImageView {
  public:
   // |context is the native view context used to create the widget holding the
   // drag image.
   // |source| is the event source that started this drag drop operation (touch
@@ skipping 38 matching lines @@
   scoped_ptr<views::Widget> widget_;
   gfx::Size widget_size_;
 
   ui::DragDropTypes::DragEventSource drag_event_source_;
   int touch_drag_operation_;
   gfx::Point touch_drag_operation_indicator_position_;
 
   DISALLOW_COPY_AND_ASSIGN(DragImageView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DRAG_DROP_DRAG_IMAGE_VIEW_H_