Reapply remove setInterval.

samples/tests/samples/dartcombat/dartcombat_test.dart

 // Copyright (c) 2011, 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 dartcombat_tests;
 
 import 'dart:html';
 import 'dart:isolate';
 import 'dart:async';
@@ skipping 153 matching lines @@
 }
 
 void _serialInvokeAsync(List closures) {
   final length = closures.length;
   if (length > 0) {
     int i = 0;
     void invokeNext() {
       closures[i]();
       i++;
       if (i < length) {
-        window.setTimeout(expectAsync0(invokeNext), 0);
+        Timer.run(expectAsync0(invokeNext));
       }
     }
-    window.setTimeout(expectAsync0(invokeNext), 0);
+    Timer.run(expectAsync0(invokeNext));
   }
 }