Add window manager component.

wm/shell/shell_main_parts.cc

Index: wm/shell/shell_main_parts.cc
diff --git a/ash/shell/shell_main_parts.cc b/wm/shell/shell_main_parts.cc
similarity index 86%
copy from ash/shell/shell_main_parts.cc
copy to wm/shell/shell_main_parts.cc
index 739950308bfe2055492acc9fc391e6b75f07b682..25d9e660a55ed091dec77cf8ef4f70e0b8f28b9b 100644
--- a/ash/shell/shell_main_parts.cc
+++ b/wm/shell/shell_main_parts.cc
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/shell/shell_main_parts.h"
+#include "wm/shell/shell_main_parts.h"
 
 #include "base/i18n/icu_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 
-namespace ash {
+namespace wm {
 namespace shell {
 
 void PreMainMessageLoopStart() {
@@ -17,5 +17,5 @@ void PreMainMessageLoopStart() {
   ResourceBundle::InitSharedInstanceWithLocale("en-US", NULL);
 }
 
-}  // namespace ash
+}  // namespace wm
 }  // namespace shell