Add some sweet XML classes.

client/tests/client/html/html_tests.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.
 
 #library('html_tests');
 
 #import('dart:html');
 #import('dart:htmlimpl');
 #import('../../../testing/unittest/unittest.dart');
 
+#source('util.dart');
 #source('CSSStyleDeclarationTests.dart');
 #source('DocumentFragmentTests.dart');
 #source('ElementTests.dart');
 #source('EventTests.dart');
 #source('ListsTests.dart');
 #source('LocalStorageTests.dart');
 #source('MeasurementTests.dart');
 #source('NodeTests.dart');
 #source('SVGElementTests.dart');
 #source('XHRTests.dart');
 
 main() {
   group('CSSStyleDeclaration', testCSSStyleDeclaration);
   group('DocumentFragment', testDocumentFragment);
   group('Element', testElement);
   group('Event', testEvents);
   group('Lists', testLists);
   group('LocalStorage', testLocalStorage);
   group('Measurement', testMeasurement);
   group('Node', testNode);
   group('SVGElement', testSVGElement);
   group('XHR', testXHR);
 }