Don't skip tests.

dart/tests/isolate/test_config.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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("isolate_test_config");
 
 #import("../../tools/testing/dart/test_suite.dart");
 
 class IsolateTestSuite extends StandardTestSuite {
   IsolateTestSuite(Map configuration)
       : super(configuration,
               "isolate",
               "tests/isolate/src",
-              ["tests/isolate/isolate.status"]);
+              ["tests/isolate/isolate.status",
+               "tests/isolate/isolate-leg.status"]);
 }