Eliminate ash::internal namespace

ash/wm/status_area_layout_manager.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_WM_STATUS_AREA_LAYOUT_MANAGER_H_
 #define ASH_WM_STATUS_AREA_LAYOUT_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/layout_manager.h"
 
 namespace ash {
 class ShelfWidget;
-namespace internal {
 
 // StatusAreaLayoutManager is a layout manager responsible for the status area.
 // In any case when status area needs relayout it redirects this call to
 // ShelfLayoutManager.
 class StatusAreaLayoutManager : public aura::LayoutManager {
  public:
   explicit StatusAreaLayoutManager(ShelfWidget* shelf);
   virtual ~StatusAreaLayoutManager();
 
   // Overridden from aura::LayoutManager:
@@ skipping 13 matching lines @@
 
   // True when inside LayoutStatusArea method.
   // Used to prevent calling itself again from SetChildBounds().
   bool in_layout_;
 
   ShelfWidget* shelf_;
 
   DISALLOW_COPY_AND_ASSIGN(StatusAreaLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_STATUS_AREA_LAYOUT_MANAGER_H_