Eliminate ash::internal namespace

ash/shelf/overflow_bubble.h

 // Copyright 2013 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_SHELF_OVERFLOW_BUBBLE_H_
 #define ASH_SHELF_OVERFLOW_BUBBLE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/events/event_handler.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace ui {
 class LocatedEvent;
 }
 
 namespace views {
 class View;
 }
 
 namespace ash {
-
-namespace internal {
-
 class OverflowBubbleView;
 class ShelfLayoutManager;
 class ShelfView;
 
 // OverflowBubble displays the overflown launcher items in a bubble.
 class OverflowBubble : public ui::EventHandler,
                        public views::WidgetObserver {
  public:
   OverflowBubble();
   virtual ~OverflowBubble();
@@ skipping 21 matching lines @@
   // Overridden from views::WidgetObserver:
   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 
   OverflowBubbleView* bubble_;  // Owned by views hierarchy.
   views::View* anchor_;  // Owned by ShelfView.
   ShelfView* shelf_view_;  // Owned by |bubble_|.
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_