Use the new test runner.

test/dart2js/ignores_non_entrypoint_dart_files_test.dart

 // 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:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
 
 main() {
-  initConfig();
   setUp(() {
     d.dir(appPath, [
       d.appPubspec(),
       d.dir('web', [
         d.file('file1.dart', 'var main = () => print("hello");'),
         d.file('file2.dart', 'void main(arg1, arg2, arg3) => print("hello");'),
         d.file('file3.dart', 'class Foo { void main() => print("hello"); }'),
         d.file('file4.dart', 'var foo;')
       ])
     ]).create();
@@ skipping 13 matching lines @@
   integration("serve ignores non-entrypoint Dart files", () {
     pubServe();
     requestShould404("file1.dart.js");
     requestShould404("file2.dart.js");
     requestShould404("file3.dart.js");
     requestShould404("file4.dart.js");
     endPubServe();
   });
 
 }