Use the new test runner.

test/transformer/runs_a_transformer_on_a_dependency_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
 
 main() {
-  initConfig();
   withBarbackVersions("any", () {
     integration("runs a local transformer on a dependency", () {
       d.dir("foo", [
         d.pubspec({
           "name": "foo",
           "version": "0.0.1",
           "transformers": ["foo/transformer"]
         }),
         d.dir("lib", [
           d.file("transformer.dart", REWRITE_TRANSFORMER),
           d.file("foo.txt", "foo")
         ])
       ]).create();
 
       d.dir(appPath, [
         d.appPubspec({"foo": {"path": "../foo"}}),
       ]).create();
 
       createLockFile('myapp', sandbox: ['foo'], pkg: ['barback']);
 
       pubServe();
       requestShouldSucceed("packages/foo/foo.out", "foo.out");
       endPubServe();
     });
   });
 }