- Make the VM understand the --checked flag to be aligned with dart2js.

tests/language/factory3_test.dart

Index: tests/language/factory3_test.dart
===================================================================
--- tests/language/factory3_test.dart	(revision 12648)
+++ tests/language/factory3_test.dart	(working copy)
@@ -1,7 +1,7 @@
 // Copyright (c) 2011, 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.
-// VMOptions=--enable_type_checks --enable_asserts
+// VMOptions=--enable_checked_mode
 
 interface Link<T> extends Iterable<T> default LinkFactory<T> {
   Link(T head, [Link<T> tail]);