Reverting setTimeout removal.

tests/html/js_interop_3_test.dart

 // Copyright (c) 2012, 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 JsInterop3Test;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
-import 'dart:async';
 import 'dart:html';
 import 'dart:isolate';
 
 injectSource(code) {
   final script = new ScriptElement();
   script.type = 'text/javascript';
   script.innerHtml = code;
   document.body.nodes.add(script);
 }
 
@@ skipping 18 matching lines @@
     };
 
     var port1 = new ReceivePortSync();
     port1.receive(fun1);
     window.registerPort('fun1', port1.toSendPort());
 
     // TODO(vsm): Investigate why this needs to be called asynchronously.
     var done = expectAsync0(() {});
     var fun2 = (message) {
       expect(message, 42);
-      Timer.run(done);
+      window.setTimeout(done, 0);
     };
 
     var port2 = new ReceivePortSync();
     port2.receive(fun2);
     window.registerPort('fun2', port2.toSendPort());
 
     injectSource(jsToDart);
   });
 }