minor fixes in custom_element so we can publish it.

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)
  * API, which lets you define your own elements. With custom elements, you
  * associate code with custom tag names, and then use those custom tag names
  * as you would any standard tag. For more information, see the
  * [Polymer.dart homepage](https://www.dartlang.org/polymer-dart/) and its
  * [custom element example]
  * (https://www.dartlang.org/polymer-dart/#custom-elements).
  */
 library custom_element;
 
+import 'dart:html';
 import 'dart:async';
-import 'dart:html';
-import 'src/custom_tag_name.dart';
 
 /**
  * *Deprecated* -- do not use. Extend [HtmlElement] and use
  * [document.register] instead. If running on a browser without native
  * document.register, you can add the polyfill script to your page:
  *
  *     <script src="packages/custom_element/custom-elements.debug.js"></script>
  *
  * You can also use "custom-elements.min.js" for the minified version.
  */
@@ skipping 80 matching lines @@
   // properties.
   @deprecated
   String getAttribute(String name) =>
       host.getAttribute(name);
 
   @deprecated
   String getAttributeNS(String namespaceUri, String localName) =>
       host.getAttributeNS(namespaceUri, localName);
 
   @deprecated
-  String setAttributeNS(
+  void setAttributeNS(

[Siggi Cherem (dart-lang), 2014/03/28 16:51:17]

FYI - analyzer tests seem to report some but not all analyzer errors. For
example, errors like a missing member are reported, but errors like this are
not.

       String namespaceUri, String localName, String value) {
     host.setAttributeNS(namespaceUri, localName, value);
   }
 
   @deprecated
   void setAttribute(String name, String value) =>
       host.setAttribute(name, value);
 
   @deprecated
   List<Node> get childNodes => host.childNodes;
 
   // TODO(jmesserly): this forwarding is temporary until Dart supports
   // subclassing Elements.
   // TODO(jmesserly): we were missing the setter for title, are other things
   // missing setters?
 
   List<Node> get nodes => host.nodes;
 
   set nodes(Iterable<Node> value) { host.nodes = value; }
 
   /**
    * Replaces this node with another node.
    */
-  Node replaceWith(Node otherNode) { host.replaceWith(otherNode); }
+  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;
 
@@ skipping 328 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');
   }
 }