Refactor and push window properties up to class properties.

ui/aura/client/focus_change_observer.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 "ui/aura/client/focus_change_observer.h"
 
 #include "ui/aura/window.h"
-#include "ui/aura/window_property.h"
+#include "ui/base/class_property.h"
 
-DECLARE_WINDOW_PROPERTY_TYPE(aura::client::FocusChangeObserver*)
+DECLARE_CLASS_PROPERTY_TYPE(aura::client::FocusChangeObserver*)
 
 namespace aura {
 namespace client {
 
-DEFINE_LOCAL_WINDOW_PROPERTY_KEY(
+DEFINE_LOCAL_CLASS_PROPERTY_KEY(
     FocusChangeObserver*, kFocusChangeObserverKey, NULL);
 
 FocusChangeObserver* GetFocusChangeObserver(Window* window) {
   return window ? window->GetProperty(kFocusChangeObserverKey) : NULL;
 }
 
 void SetFocusChangeObserver(Window* window,
                             FocusChangeObserver* focus_change_observer) {
   window->SetProperty(kFocusChangeObserverKey, focus_change_observer);
 }
 
 }  // namespace client
 }  // namespace aura