[package:mdv] port createInstance change

tools/dom/templates/html/impl/impl_Element.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.
 
 part of $LIBRARYNAME;
 
 class _ChildrenElementList extends ListBase<Element> {
   // Raw Element.
   final Element _element;
   final HtmlCollection _childElements;
@@ skipping 703 matching lines @@
   DocumentFragment get content {
     _ensureTemplate();
     return _templateContent;
   }
 
   /**
    * Creates an instance of the template.
    * This is only supported if [isTemplate] is true.
    */
   @Experimental
-  DocumentFragment createInstance() {
+  DocumentFragment createInstance(model, String syntax) {
     _ensureTemplate();
-    return TemplateElement.mdvPackage(this).createInstance();
+    return TemplateElement.mdvPackage(this).createInstance(model, syntax);
   }
 
   /**
    * The data model which is inherited through the tree.
    * This is only supported if [isTemplate] is true.
    */
   @Experimental
   get model => TemplateElement.mdvPackage(this).model;
 
   @Experimental
@@ skipping 182 matching lines @@
   const ScrollAlignment._internal(this._value);
   toString() => 'ScrollAlignment.$_value';
 
   /// Attempt to align the element to the top of the scrollable area.
   static const TOP = const ScrollAlignment._internal('TOP');
   /// Attempt to center the element in the scrollable area.
   static const CENTER = const ScrollAlignment._internal('CENTER');
   /// Attempt to align the element to the bottom of the scrollable area.
   static const BOTTOM = const ScrollAlignment._internal('BOTTOM');
 }