Move some more WM functionality down into ash.

ash/wm/default_container_event_filter.cc

Index: ash/wm/default_container_event_filter.cc
===================================================================
--- ash/wm/default_container_event_filter.cc	(revision 115655)
+++ ash/wm/default_container_event_filter.cc	(working copy)
@@ -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 "ui/aura_shell/default_container_event_filter.h"
+#include "ash/wm/default_container_event_filter.h"
 
+#include "ash/wm/default_container_layout_manager.h"
+#include "ash/wm/window_frame.h"
+#include "ash/wm/window_util.h"
 #include "ui/aura/event.h"
 #include "ui/aura/window.h"
-#include "ui/aura_shell/default_container_layout_manager.h"
-#include "ui/aura_shell/window_frame.h"
-#include "ui/aura_shell/window_util.h"
 #include "ui/base/hit_test.h"
 
 namespace {