Adding Node.baseUri to CustomElement.

pkg/custom_element/lib/custom_element.dart

 // Copyright (c) 2013, 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.
 
 /**
  * Custom DOM elements.
  *
  * This library provides access to the Polymer project's
  * [Custom Elements]
  * (http://www.polymer-project.org/platform/custom-elements.html)
@@ skipping 165 matching lines @@
   set attributes(Map<String, String> value) {
     host.attributes = value;
   }
 
   List<Element> get elements => host.children;
 
   set elements(List<Element> value) {
     host.children = value;
   }
 
+  String get baseUri => host.baseUri;
+
   List<Element> get children => host.children;
 
   set children(List<Element> value) {
     host.children = value;
   }
 
   Set<String> get classes => host.classes;
 
   set classes(Iterable<String> value) {
     host.classes = value;
@@ skipping 289 matching lines @@
   Stream<TouchEvent> get onTouchLeave => host.onTouchLeave;
   Stream<TouchEvent> get onTouchMove => host.onTouchMove;
   Stream<TouchEvent> get onTouchStart => host.onTouchStart;
   Stream<TransitionEvent> get onTransitionEnd => host.onTransitionEnd;
 
   // TODO(sigmund): do the normal forwarding when dartbug.com/7919 is fixed.
   Stream<WheelEvent> get onMouseWheel {
     throw new UnsupportedError('onMouseWheel is not supported');
   }
 }