Move some more WM functionality down into ash.

ui/aura_shell/window_properties.cc

Index: ui/aura_shell/window_properties.cc
===================================================================
--- ui/aura_shell/window_properties.cc	(revision 115655)
+++ ui/aura_shell/window_properties.cc	(working copy)
@@ -1,17 +0,0 @@
-// 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 "ui/aura_shell/window_properties.h"
-
-namespace aura_shell {
-namespace internal {
-
-// Alphabetical sort.
-
-const char kShadowTypeKey[] = "ShadowType";
-
-// Alphabetical sort.
-
-}  // namespace internal
-}  // namespace aura_shell