Rename the aura_shell namespace to ash

ash/launcher/view_model_utils.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_LAUNCHER_VIEW_MODEL_UTILS_H_
 #define ASH_LAUNCHER_VIEW_MODEL_UTILS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "ash/ash_export.h"
 
 namespace views {
 class View;
 }
 
-namespace aura_shell {
+namespace ash {
 
 class ViewModel;
 
 class ASH_EXPORT ViewModelUtils {
  public:
   // Sets the bounds of each view to its ideal bounds.
   static void SetViewBoundsToIdealBounds(const ViewModel& model);
 
   // Returns the index to move |view| to based on a x-coordinate of |x|.
   static int DetermineMoveIndex(const ViewModel& model,
                                 views::View* view,
                                 int x);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ViewModelUtils);
 };
 
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_LAUNCHER_VIEW_MODEL_UTILS_H_