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

pkg/unittest/test/unittest_late_exception_test.dart

Index: pkg/unittest/test/unittest_late_exception_test.dart
===================================================================
--- pkg/unittest/test/unittest_late_exception_test.dart	(revision 33351)
+++ pkg/unittest/test/unittest_late_exception_test.dart	(working copy)
@@ -14,11 +14,11 @@
 var testFunction = (_) {
   var f;
   test('testOne', () {
-    f = expectAsync(() {});
+    f = expectAsync0(() {});
     _defer(f);
   });
   test('testTwo', () {
-    _defer(expectAsync(() { f(); }));
+    _defer(expectAsync0(() { f(); }));
   });
 };