Rename client/{dom,html} to lib/{dom,html} .

client/dom/src/GlobalProperties.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-Window get window() {
-  return _NativeDomGlobalProperties.getWindow();
-}
-
-// TODO(vsm): Remove when prefixes are supported.
-Window get dom_window() {
-  return _NativeDomGlobalProperties.getWindow();
-}
-
-Document get document() {
-  return _NativeDomGlobalProperties.getDocument();
-}
-
-class _NativeDomGlobalProperties {
-  static Window getWindow() native;
-  static Document getDocument() native;
-}