Move some more files into ash... this time seed the window manager dir.

ui/aura_shell/shadow_types.cc

-// 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/shadow_types.h"
-
-#include "ui/aura/window.h"
-#include "ui/aura_shell/window_properties.h"
-
-namespace aura_shell {
-namespace internal {
-
-void SetShadowType(aura::Window* window, ShadowType shadow_type) {
-  window->SetIntProperty(kShadowTypeKey, shadow_type);
-}
-
-ShadowType GetShadowType(aura::Window* window) {
-  return static_cast<ShadowType>(window->GetIntProperty(kShadowTypeKey));
-}
-
-}  // namespace internal
-}  // namespace aura_shell