Adding Element.created constructor

tools/dom/templates/html/impl/impl_Document.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;
 
 @DocsEditable
 $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME extends Node $NATIVESPEC
 {
 
 $!MEMBERS
-
   /**
    * Finds all descendant elements of this document that match the specified
    * group of selectors.
    *
    * Unless your webpage contains multiple documents, the top-level queryAll
    * method behaves the same as this method, so you should use it instead to
    * save typing a few characters.
    *
    * [selectors] should be a string using CSS selector syntax.
    *     var items = document.queryAll('.itemClassName');
@@ skipping 21 matching lines @@
 $else
     if (typeExtension != null) {
       return _createElement(tagName, typeExtension);
     } else {
       // Fast-path for Dartium when typeExtension is not needed.
       return _Utils.createElement(this, tagName);
     }
 $endif
   }
 }