It is time.

ui/aura/client/screen_position_client.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/screen_position_client.h"
-
-#include "ui/aura/window_property.h"
-
-DECLARE_WINDOW_PROPERTY_TYPE(aura::client::ScreenPositionClient*)
-
-namespace aura {
-namespace client {
-
-DEFINE_LOCAL_WINDOW_PROPERTY_KEY(ScreenPositionClient*,
-                                 kScreenPositionClientKey,
-                                 NULL);
-
-void SetScreenPositionClient(Window* root_window,
-                             ScreenPositionClient* client) {
-  DCHECK_EQ(root_window->GetRootWindow(), root_window);
-  root_window->SetProperty(kScreenPositionClientKey, client);
-}
-
-ScreenPositionClient* GetScreenPositionClient(const Window* root_window) {
-  if (root_window)
-    DCHECK_EQ(root_window->GetRootWindow(), root_window);
-  return root_window ?
-      root_window->GetProperty(kScreenPositionClientKey) : NULL;
-}
-
-}  // namespace client
-}  // namespace aura