[polymer] interop with polymer-element and polymer.js

samples/third_party/todomvc/web/elements/td_todos.html

-<link rel="import" href="../lib-elements/polymer_selector.html">
+<link rel="import" href="../lib-elements/polymer-selector.html">
 <link rel="import" href="../lib-elements/simple_router.html">
 <link rel="import" href="td_input.html">
 <link rel="import" href="td_item.html">
 
 <polymer-element name="td-todos">
   <template>
     <link rel="stylesheet" href="td_todos.css">
     <simple-router on-route="{{routeAction}}"></simple-router>
     <section id="todoapp">
       <header id="header">
@@ skipping 10 matching lines @@
             on-td-destroy-item="{{destroyItemAction}}">
           <template repeat="{{model.filtered}}">
             <li is="td-item" item="{{}}"></li>
           </template>
         </ul>
       </section>
       <footer id="footer" hidden?="{{model.items.length == 0}}">
         <span id="todo-count"><strong>{{model.activeCount}}</strong>
             {{model.activeItemWord}} left</span>
         <polymer-selector id="filters" selected="{{activeRoute}}">
-          <li name="all">
+          <li label="all">
             <a href="{{baseUri}}#/">All</a>
           </li>
-          <li name="active">
+          <li label="active">
             <a href="{{baseUri}}#/active">Active</a>
           </li>
-          <li name="completed">
+          <li label="completed">
             <a href="{{baseUri}}#/completed">Completed</a>
           </li>
         </polymer-selector>
         <button hidden?="{{model.completedCount == 0}}" id="clear-completed"
             on-click="{{clearCompletedAction}}">Clear completed
             ({{model.completedCount}})</button>
       </footer>
     </section>
   </template>
 
   <script type="application/dart" src="td_todos.dart"></script>
 
 </polymer-element>