"Reverting 18531"

tests/benchmark_smoke/benchmark_smoke_test.dart

Index: tests/benchmark_smoke/benchmark_smoke_test.dart
diff --git a/tests/benchmark_smoke/benchmark_smoke_test.dart b/tests/benchmark_smoke/benchmark_smoke_test.dart
index 2e4582767376ec179efd19cae66e894a14056e6c..2c46a48544c777cb16ac10b00e2d86152d80e3c4 100644
--- a/tests/benchmark_smoke/benchmark_smoke_test.dart
+++ b/tests/benchmark_smoke/benchmark_smoke_test.dart
@@ -6,7 +6,6 @@ library benchmarksmoketest;
 
 // Tests that benchmark classes used in perf testing are not broken.
 import 'benchmark_lib.dart';
-import 'dart:async';
 import 'dart:html';
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
@@ -14,9 +13,9 @@ import '../../pkg/unittest/lib/html_config.dart';
 void main() {
   useHtmlConfiguration();
 
-  test('performanceTesting', () {
-    Timer.run(BENCHMARK_SUITE.runBenchmarks);
-    Timer.run(expectAsync0(testForCompletion));
+  test('performanceTesting', () { 
+    window.setTimeout(BENCHMARK_SUITE.runBenchmarks, 0);
+    window.setTimeout(expectAsync0(testForCompletion), 0);
   });
 }