Wrapperless dart:html for Dartium.

lib/dom/templates/html/dartium/factoryprovider_XMLHttpRequest.darttemplate

 // Copyright (c) 2012, 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.
 
 class $FACTORYPROVIDER {
-  factory $INTERFACE() => _wrap(_$(DOM_INTERFACE)FactoryProviderImpl.create$DOM_INTERFACE());
+  factory $INTERFACE($PARAMETERS) => _create$INTERFACE($ARGUMENTS);
+  static $INTERFACE _create$INTERFACE($PARAMETERS) native "$NATIVE_NAME";
 
   factory XMLHttpRequest.get(String url,
                                      onSuccess(XMLHttpRequest request)) =>
       _XMLHttpRequestUtils.get(url, onSuccess);
 }