"Reverting 30387" -- failures on IE

samples/third_party/todomvc/test/utils.dart

Index: samples/third_party/todomvc/test/utils.dart
diff --git a/samples/third_party/todomvc/test/utils.dart b/samples/third_party/todomvc/test/utils.dart
deleted file mode 100644
index 196ca1eac35b46e4956127b35222322f1c0ba099..0000000000000000000000000000000000000000
--- a/samples/third_party/todomvc/test/utils.dart
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library todomvc.test.utils;
-
-import 'dart:async';
-import 'package:observe/observe.dart';
-
-Future onPropertyInit(Observable obj, String path) {
-  final obs = new PathObserver(obj, path);
-  if (obs.value != null) return new Future.value(obs.value);
-
-  final c = new Completer();
-  StreamSubscription sub;
-  sub = obs.changes.listen((_) {
-    if (obs.value != null) {
-      sub.cancel();
-      c.complete(obs.value);
-    }
-  });
-  return c.future;
-}