Rename the aura_shell namespace to ash

ash/wm/shelf_layout_manager.h

 // Copyright (c) 2011 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_SHELF_LAYOUT_MANAGER_H_
 #define ASH_WM_SHELF_LAYOUT_MANAGER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/layout_manager.h"
 #include "ash/ash_export.h"
 #include "ui/gfx/compositor/layer_animation_observer.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/rect.h"
 
 namespace views {
 class Widget;
 }
 
-namespace aura_shell {
+namespace ash {
 namespace internal {
 
 // ShelfLayoutManager is the layout manager responsible for the launcher and
 // status widgets. The launcher is given the total available width and told the
 // width of the status area. This allows the launcher to draw the background and
 // layout to the status area.
 // To respond to bounds changes in the status area StatusAreaLayoutManager works
 // closely with ShelfLayoutManager.
 class ASH_EXPORT ShelfLayoutManager : public aura::LayoutManager,
                                              public ui::LayerAnimationObserver {
@@ skipping 67 matching lines @@
   // Max height needed.
   int max_height_;
 
   views::Widget* launcher_;
   views::Widget* status_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace internal
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_WM_SHELF_LAYOUT_MANAGER_H_