fix property linkage warnings

ash/wm/window_util.cc

 // Copyright (c) 2012 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 "ash/wm/window_util.h"
 
 #include "ash/shell.h"
 #include "ash/wm/activation_controller.h"
+#include "ash/wm/window_properties.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
-#include "ui/aura/window_property.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/gfx/monitor.h"
 #include "ui/gfx/screen.h"
 
-DECLARE_WINDOW_PROPERTY_TYPE(bool);
-
 namespace ash {
-DEFINE_WINDOW_PROPERTY_KEY(bool, kOpenWindowSplitKey, false);
-
 namespace wm {
 
 void ActivateWindow(aura::Window* window) {
   DCHECK(window);
   DCHECK(window->GetRootWindow());
   aura::client::GetActivationClient(window->GetRootWindow())->ActivateWindow(
       window);
 }
 
 void DeactivateWindow(aura::Window* window) {
@@ skipping 65 matching lines @@
 }
 
 void CenterWindow(aura::Window* window) {
   const gfx::Monitor monitor = gfx::Screen::GetMonitorNearestWindow(window);
   gfx::Rect center = monitor.work_area().Center(window->bounds().size());
   window->SetBounds(center);
 }
 
 }  // namespace wm
 }  // namespace ash