Move wm/core to wm namespace.

ash/shell/content_client/shell_browser_main_parts.h

Index: ash/shell/content_client/shell_browser_main_parts.h
diff --git a/ash/shell/content_client/shell_browser_main_parts.h b/ash/shell/content_client/shell_browser_main_parts.h
index 229c8681cef62b1cb2ca29ccf8fdeb69f99bea08..0e07cbf24bc6850985f5f60a6916009b9bcee68d 100644
--- a/ash/shell/content_client/shell_browser_main_parts.h
+++ b/ash/shell/content_client/shell_browser_main_parts.h
@@ -22,11 +22,9 @@ namespace net {
 class NetLog;
 }
 
-namespace views {
-namespace corewm {
+namespace wm {
 class WMState;
 }
-}
 
 namespace ash {
 namespace shell {
@@ -57,7 +55,7 @@ class ShellBrowserMainParts : public content::BrowserMainParts {
   scoped_ptr<content::ShellBrowserContext> browser_context_;
   scoped_ptr<ash::shell::WindowWatcher> window_watcher_;
   ShellDelegateImpl* delegate_;  // owned by Shell
-  scoped_ptr<views::corewm::WMState> wm_state_;
+  scoped_ptr<wm::WMState> wm_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellBrowserMainParts);
 };