Enable html_dartium to be built as part of dartium build

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');
 
 $!GENERATED_DART_FILES
 
-#source('../../dom/src/EventListener.dart');
-#source('../../dom/src/KeyLocation.dart');
-#source('../../dom/src/KeyName.dart');
-#source('../../dom/src/ReadyState.dart');
-#source('../../dom/src/_Collections.dart');
-#source('../../dom/src/_XMLHttpRequestUtils.dart');
-#source('../../html/src/shared_FactoryProviders.dart');
-#source('../../html/src/dartium_FactoryProviders.dart');
-#source('../../html/src/Measurement.dart');
-#source('../../html/src/Device.dart');
-#source('../../html/src/_Testing.dart');
-#source('../../html/src/_DOMTypeBase.dart');
-#source('../../dom/src/_ListIterators.dart');
-#source('../../dom/src/_Lists.dart');
+#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('$AUXILIARY_DIR/../../html/src/shared_FactoryProviders.dart');
+#source('$AUXILIARY_DIR/../../html/src/dartium_FactoryProviders.dart');
+#source('$AUXILIARY_DIR/../../html/src/Measurement.dart');
+#source('$AUXILIARY_DIR/../../html/src/Device.dart');
+#source('$AUXILIARY_DIR/../../html/src/_Testing.dart');
+#source('$AUXILIARY_DIR/../../html/src/_DOMTypeBase.dart');
+#source('$AUXILIARY_DIR/_ListIterators.dart');
+#source('$AUXILIARY_DIR/_Lists.dart');
 
 _WindowImpl __window;
 _DocumentImpl __document;
 
 void _initialize() {
   __window = _wrap(dom.window);
   __document = _wrap(dom.document);
 }
 
 Window get window() {
@@ skipping 37 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}';
   }
 }