Migrate async tests to strong

tests/lib_strong/async/run_zoned4_test.dart

Index: tests/lib_strong/async/run_zoned4_test.dart
diff --git a/tests/lib_strong/async/run_zoned4_test.dart b/tests/lib_strong/async/run_zoned4_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a5336b25ca4762c5b691c53e122dd5e501265912
--- /dev/null
+++ b/tests/lib_strong/async/run_zoned4_test.dart
@@ -0,0 +1,14 @@
+// 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.
+
+import "package:expect/expect.dart";
+import 'dart:async';
+
+main() {
+  // Make sure `runZoned` returns the result of a synchronous call when an
+  // error handler is defined.
+  Expect.equals(499,
+                runZoned(() => 499,
+                         onError: (e) { throw "Unexpected"; }));
+}