Revert https://code.google.com/p/dart/source/detail?r=33346

pkg/unittest/test/unittest_middle_exception_test.dart

 // Copyright (c) 2013, 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 unittestTest;
 import 'dart:isolate';
 import 'dart:async';
 import 'package:unittest/unittest.dart';
 
 part 'unittest_test_utils.dart';
 
 var testName = 'late exception test';
 
 var testFunction = (_) {
   test('testOne', () { expect(true, isTrue); });
   test('testTwo', () { expect(true, isFalse); });
   test('testThree', () {
-    var done = expectAsync(() {});
+    var done = expectAsync0((){});
     _defer(() {
       expect(true, isTrue);
       done();
     });
   });
 };
 
 var expected = buildStatusString(2, 1, 0,
     'testOne::testTwo:Expected: false Actual: <true>:testThree');