dart:io | Add SecureSocket.importPrivateCertificates, that reads a PKCS#12 file.

tests/standalone/io/delete_a_directory_later.dart

Index: tests/standalone/io/delete_a_directory_later.dart
diff --git a/tests/standalone/io/delete_a_directory_later.dart b/tests/standalone/io/delete_a_directory_later.dart
new file mode 100644
index 0000000000000000000000000000000000000000..5e6da0d4f1201b0e1ba517b497f7b0cc59581b85
--- /dev/null
+++ b/tests/standalone/io/delete_a_directory_later.dart
@@ -0,0 +1,12 @@
+// 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 "dart:io";
+import "dart:async";
+
+main() {
+  new Timer(new Duration(seconds: 2), () {
+    new Directory(new Options().arguments[0]).delete(recursive: true);
+  });
+}