Rename the aura_shell namespace to ash

ash/shell.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/shell.h"
 
 #include <algorithm>
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_filter.h"
@@ skipping 25 matching lines @@
 #include "ui/aura/root_window.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/compositor/layer.h"
 #include "ui/gfx/compositor/layer_animator.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/size.h"
 #include "ui/views/widget/native_widget_aura.h"
 #include "ui/views/widget/widget.h"
 
-namespace aura_shell {
+namespace ash {
 
 namespace {
 
 using views::Widget;
 
 // Screen width at or below which we automatically start in compact window mode,
 // in pixels. Should be at least 1366 pixels, the resolution of ChromeOS ZGB
 // device displays, as we traditionally used a single window on those devices.
 const int kCompactWindowModeWidthThreshold = 1366;
 
@@ skipping 302 matching lines @@
   workspace_controller_.reset(
       new internal::WorkspaceController(default_container));
   workspace_controller_->SetLauncherModel(launcher_->model());
   default_container->SetEventFilter(
       new internal::DefaultContainerEventFilter(default_container));
   default_container->SetLayoutManager(
       new internal::DefaultContainerLayoutManager(
           workspace_controller_->workspace_manager()));
 }
 
-}  // namespace aura_shell
+}  // namespace ash