Migrate dom tests to dart:html.

lib/dom/templates/html/dartium/html_dartium.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.
 
 // DO NOT EDIT
 // Auto-generated dart:html library.
 
 #library("html");
 
-#import('dart:dom', prefix:'dom');
+#import('dart:dom_deprecated', prefix:'dom');
 
 $!GENERATED_DART_FILES
 
 #source('$AUXILIARY_DIR/EventListener.dart');
 #source('$AUXILIARY_DIR/KeyLocation.dart');
 #source('$AUXILIARY_DIR/KeyName.dart');
 #source('$AUXILIARY_DIR/ReadyState.dart');
 #source('$AUXILIARY_DIR/_Collections.dart');
 #source('$AUXILIARY_DIR/_XMLHttpRequestUtils.dart');
 #source('$AUXILIARY_DIR/../../html/src/shared_FactoryProviders.dart');
@@ skipping 54 matching lines @@
   switch(domObject.typeName) {
     case 'HTMLElement':
       return new _UnknownElementImpl._wrap(domObject);
 $WRAPCASES
     case 'HTMLDocument':
       return new _DocumentImpl._wrap(domObject);
     default:
       throw 'Unrecognized object $domObject. Name=${domObject.typeName}';
   }
 }
+
+spawnDomIsolate(Window targetWindow, String entryPoint) =>
+  dom.spawnDomIsolateImpl(_unwrap(targetWindow), entryPoint);
+
+dom.LayoutTestController get layoutTestController() =>
+  dom.layoutTestController;