Fixing bots after Polymer element integration

samples/third_party/todomvc/test/markdone_test.dart

Index: samples/third_party/todomvc/test/markdone_test.dart
diff --git a/samples/third_party/todomvc/test/markdone_test.dart b/samples/third_party/todomvc/test/markdone_test.dart
index cbf90cabc6eef99cf1d0a51d36184d424c6a117f..8a866074815805aeae532ebc80950ab24a00ef2e 100644
--- a/samples/third_party/todomvc/test/markdone_test.dart
+++ b/samples/third_party/todomvc/test/markdone_test.dart
@@ -4,6 +4,7 @@
 
 library todomvc.test.markdone_test;
 
+import 'dart:async';
 import 'dart:html';
 import 'package:polymer/polymer.dart';
 import 'package:unittest/unittest.dart';
@@ -49,6 +50,8 @@ Node findShadowHost(Node node, ShadowRoot root) {
 main() {
   useHtmlConfiguration();
 
+  setUp(() => new Future.delayed(Duration.ZERO));
+
   test('mark done', () {
     appModel.todos.add(new Todo('one (unchecked)'));
     appModel.todos.add(new Todo('two (unchecked)'));