Move some more WM functionality down into ash.

ash/wm/default_container_event_filter.h

Index: ash/wm/default_container_event_filter.h
===================================================================
--- ash/wm/default_container_event_filter.h	(revision 115655)
+++ ash/wm/default_container_event_filter.h	(working copy)
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_AURA_SHELL_DEFAULT_CONTAINER_EVENT_FILTER_H_
-#define UI_AURA_SHELL_DEFAULT_CONTAINER_EVENT_FILTER_H_
+#ifndef ASH_WM_DEFAULT_CONTAINER_EVENT_FILTER_H_
+#define ASH_WM_DEFAULT_CONTAINER_EVENT_FILTER_H_
 #pragma once
 
-#include "ui/aura_shell/toplevel_window_event_filter.h"
+#include "ash/wm/toplevel_window_event_filter.h"
 
 namespace aura {
 class MouseEvent;
@@ -52,4 +52,4 @@
 }  // namespace internal
 }  // namespace aura_shell
 
-#endif  //  UI_AURA_SHELL_DEFAULT_CONTAINER_EVENT_FILTER_H_
+#endif  //  ASH_WM_DEFAULT_CONTAINER_EVENT_FILTER_H_