Support for observable models, fixes #259

test/data/input/text_top_level2_test.html

Index: test/data/input/text_top_level2_test.html
diff --git a/test/data/input/text_top_level2_test.html b/test/data/input/text_top_level2_test.html
index a1d8cf0c5e1421800b6396b1943f27433b0674d8..3d8a70ed961e619165d168b191372067761b58c9 100644
--- a/test/data/input/text_top_level2_test.html
+++ b/test/data/input/text_top_level2_test.html
@@ -22,14 +22,14 @@ BSD-style license that can be found in the LICENSE file.
   expect to see 'two': <x-var></x-var>
   <script type="application/dart">
     import 'dart:html';
-    import 'package:web_ui/watcher.dart';
+    import 'package:web_ui/observe.dart';
     import 'common.dart';
 
     main() {
       window.setTimeout(() {
         topLevelVar = 'two';
-        dispatch();
-        window.setTimeout(() => window.postMessage('done', '*'), 0);
+        deliverChangesSync();
+        window.setImmediate(() => window.postMessage('done', '*'));
       }, 0);
     }
   </script>