fixes to polymer, gets tests back to a stable state

pkg/polymer/test/publish_attributes_test.dart

Index: pkg/polymer/test/publish_attributes_test.dart
diff --git a/pkg/polymer/test/publish_attributes_test.dart b/pkg/polymer/test/publish_attributes_test.dart
index b07df0cc1d6f87e9780dacc859676a7e6c8363d9..80d5ef86aab9f6b38efa41800df0e0ea65611380 100644
--- a/pkg/polymer/test/publish_attributes_test.dart
+++ b/pkg/polymer/test/publish_attributes_test.dart
@@ -44,6 +44,8 @@ class XSquid extends XZot {
 @initMethod _main() {
   useHtmlConfiguration();
 
+  setUp(() => Polymer.onReady);
+
   test('published properties', () {
     published(tag) =>
         query('polymer-element[name=$tag]').xtag.publishedProperties;