Updates for the next sdk in the web-ui master branch

lib/web_ui.dart

 // 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.
 
 /**
  * This library exports all of the commonly used functions and types for
  * building UI's. It is equivalent to the following imports:
  *
  *     import 'package:web_ui/observe.dart';
  *     import 'package:web_ui/safe_html.dart';
@@ skipping 325 matching lines @@
    */
   Node replaceWith(Node otherNode) { host.replaceWith(otherNode); }
 
   /**
    * Removes this node from the DOM.
    */
   void remove() => host.remove();
 
   Node get nextNode => host.nextNode;
 
+  String get nodeName => host.nodeName;
   Document get document => host.document;
 
   Node get previousNode => host.previousNode;
 
   String get text => host.text;
 
   set text(String v) { host.text = v; }
 
   bool contains(Node other) => host.contains(other);
 
@@ skipping 21 matching lines @@
   set children(List<Element> value) {
     host.children = value;
   }
 
   Set<String> get classes => host.classes;
 
   set classes(Iterable<String> value) {
     host.classes = value;
   }
 
+  CssRect get contentEdge => host.contentEdge;
+  CssRect get paddingEdge => host.paddingEdge;
+  CssRect get borderEdge => host.borderEdge;
+  CssRect get marginEdge => host.marginEdge;
+
+
   Map<String, String> getNamespacedAttributes(String namespace) =>
       host.getNamespacedAttributes(namespace);
 
   CssStyleDeclaration getComputedStyle([String pseudoElement])
     => host.getComputedStyle(pseudoElement);
 
   Element clone(bool deep) => host.clone(deep);
 
   Element get parent => host.parent;
 
@@ skipping 124 matching lines @@
   void requestPointerLock() { host.requestPointerLock(); }
 
   Element query(String selectors) => host.query(selectors);
 
   ElementList queryAll(String selectors) => host.queryAll(selectors);
 
   HtmlCollection get $dom_children => host.$dom_children;
 
   int get $dom_childElementCount => host.$dom_childElementCount;
 
-  String get $dom_className => host.$dom_className;
-  set $dom_className(String value) { host.$dom_className = value; }
+  String get className => host.className;
+  set className(String value) { host.className = value; }
 
   @deprecated
   int get clientHeight => client.height;
 
   @deprecated
   int get clientLeft => client.left;
 
   @deprecated
   int get clientTop => client.top;
 
@@ skipping 216 matching lines @@
 }
 
 /**
  * Set this to true to use native Shadow DOM if it is supported.
  * Note that this will change behavior of [WebComponent] APIs for tree
  * traversal.
  */
 bool useShadowDom = false;
 
 bool get _realShadowRoot => useShadowDom && ShadowRoot.supported;