Fix a few more timeout tests.

test/runner/browser/runner_test.dart

 // Copyright (c) 2015, 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.
 
 @TestOn("vm")
 
 import 'package:scheduled_test/descriptor.dart' as d;
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
@@ skipping 441 matching lines @@
 
   test("respects top-level @Timeout declarations", () {
     d.file("test.dart", '''
 @Timeout(const Duration(seconds: 0))
 
 import 'dart:async';
 
 import 'package:test/test.dart';
 
 void main() {
-  test("timeout", () {});
+  test("timeout", () => new Future.delayed(Duration.ZERO));
 }
 ''').create();
 
     var test = runTest(["-p", "content-shell", "test.dart"]);
     test.stdout.expect(containsInOrder([
       "Test timed out after 0 seconds.",
       "-1: Some tests failed."
     ]));
     test.shouldExit(1);
   });
@@ skipping 31 matching lines @@
       test.shouldExit(0);
     });
 
     test("respects matching Timeouts", () {
       d.file("test.dart", '''
 import 'dart:async';
 
 import 'package:test/test.dart';
 
 void main() {
-  test("fail", () => throw 'oh no', onPlatform: {
-    "browser": new Timeout(new Duration(seconds: 0))
+  test("fail", () async {
+    await new Future.delayed(Duration.ZERO);
+    throw 'oh no';
+  }, onPlatform: {
+    "browser": new Timeout(Duration.ZERO)
   });
 }
 ''').create();
 
       var test = runTest(["-p", "content-shell", "test.dart"]);
       test.stdout.expect(containsInOrder([
         "Test timed out after 0 seconds.",
         "-1: Some tests failed."
       ]));
       test.shouldExit(1);
@@ skipping 85 matching lines @@
       d.file("test.dart", '''
 @OnPlatform(const {
   "browser": const Timeout(const Duration(seconds: 0))
 })
 
 import 'dart:async';
 
 import 'package:test/test.dart';
 
 void main() {
-  test("fail", () => throw 'oh no');
+  test("fail", () async {
+    await new Future.delayed(Duration.ZERO);
+    throw 'oh no';
+  });
 }
 ''').create();
 
       var test = runTest(["-p", "content-shell", "test.dart"]);
       test.stdout.expect(containsInOrder([
         "Test timed out after 0 seconds.",
         "-1: Some tests failed."
       ]));
       test.shouldExit(1);
     });
@@ skipping 12 matching lines @@
   test("success", () {});
 }
 ''').create();
 
       var test = runTest(["-p", "content-shell", "test.dart"]);
       test.stdout.expect(consumeThrough(contains("+1: All tests passed!")));
       test.shouldExit(0);
     });
   });
 }