Rename the aura_shell namespace to ash

ash/test/test_suite.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/test/test_suite.h"
 
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/gfx/compositor/test/compositor_test_support.h"
 #include "ui/gfx/gfx_paths.h"
 
 #if defined(USE_WEBKIT_COMPOSITOR)
 #include "ui/gfx/compositor/compositor_setup.h"
 #else
 #include "ui/gfx/test/gfx_test_utils.h"
 #endif
 
-namespace aura_shell {
+namespace ash {
 namespace test {
 
 AuraShellTestSuite::AuraShellTestSuite(int argc, char** argv)
     : TestSuite(argc, argv) {}
 
 void AuraShellTestSuite::Initialize() {
   base::TestSuite::Initialize();
 
   gfx::RegisterPathProvider();
   ui::RegisterPathProvider();
@@ skipping 10 matching lines @@
 }
 
 void AuraShellTestSuite::Shutdown() {
   ui::CompositorTestSupport::Terminate();
   ui::ResourceBundle::CleanupSharedInstance();
 
   base::TestSuite::Shutdown();
 }
 
 }  // namespace test
-}  // namespace aura_shell
+}  // namespace ash