Rename the aura_shell namespace to ash

ash/wm/status_area_layout_manager.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/wm/status_area_layout_manager.h"
 
 #include "ash/wm/shelf_layout_manager.h"
 #include "base/auto_reset.h"
 
-namespace aura_shell {
+namespace ash {
 namespace internal {
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaLayoutManager, public:
 
 StatusAreaLayoutManager::StatusAreaLayoutManager(ShelfLayoutManager* shelf)
     : in_layout_(false),
       shelf_(shelf) {
 }
 
@@ skipping 30 matching lines @@
 
 void StatusAreaLayoutManager::LayoutStatusArea() {
   // Shelf layout manager may be already doing layout.
   if (shelf_->in_layout())
     return;
 
   AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
   shelf_->LayoutShelf();
 }
 
-}  // internal
-}  // aura_shell
+}  // namespace internal
+}  // namespace ash