Reapply remove setInterval.

samples/third_party/dromaeo/Dromaeo.dart

 library dromaeo_test;
 
 import 'dart:html';
+import 'dart:async';
 import 'dart:json' as json;
 import 'dart:math' as Math;
 import 'Suites.dart';
 
 main() {
   new Dromaeo().run();
 }
 
 class SuiteController {
   final SuiteDescription _suiteDescription;
@@ skipping 206 matching lines @@
   }
 
   Element _byId(String id) {
     return document.query('#$id');
   }
 
   int get _suitesTotal {
     return _suiteControllers.length;
   }
 }