Rename the aura_shell namespace to ash

ash/app_list/app_list.cc

 // 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.
 
 #include "ash/app_list/app_list.h"
 
 #include "ash/app_list/app_list_model.h"
 #include "ash/app_list/app_list_view.h"
 #include "ash/ash_switches.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "ui/aura/event.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/screen.h"
 
-namespace aura_shell {
+namespace ash {
 namespace internal {
 
 namespace {
 
 // Gets preferred bounds of app list window in show/hide state.
 gfx::Rect GetPreferredBounds(bool show) {
   // The y-axis offset used at the beginning of showing animation.
   static const int kMoveUpAnimationOffset = 50;
 
   gfx::Point cursor = gfx::Screen::GetCursorScreenPoint();
@@ skipping 155 matching lines @@
   ResetWidget();
 }
 
 void AppList::OnWidgetActivationChanged(views::Widget* widget, bool active) {
   DCHECK(widget_ == widget);
   if (widget_ && is_visible_ && !active)
     SetVisible(false);
 }
 
 }  // namespace internal
-}  // namespace aura_shell
+}  // namespace ash