Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components/iron-test-helpers/iron-test-helpers.html

 <!--
 @license
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
+<script src="mock-interactions.js"></script>
+<script src="test-helpers.js"></script>
 <script>
+  (function(global) {
+    'use strict';
 
-  Polymer.Base._addFeature({
+    var TestHelpers = global.TestHelpers = global.TestHelpers || {};
 
-    _prepIs: function() {
-      if (!this.is) {
-        var module =
-          (document._currentScript || document.currentScript).parentNode;
-        if (module.localName === 'dom-module') {
-          var id = module.id || module.getAttribute('name')
-            || module.getAttribute('is')
-          this.is = id;
-        }
-      }
-    }
-
-  });
-
+    TestHelpers.flushAsynchronousOperations = flushAsynchronousOperations;
+    TestHelpers.forceXIfStamp = forceXIfStamp;
+    TestHelpers.fireEvent = fireEvent;
+  })(this);
 </script>