Use the new test runner.

test/snapshot/creates_a_snapshot_test.dart

 // Copyright (c) 2014, 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 pub_tests;
 
 import 'package:path/path.dart' as p;
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 main() {
-  initConfig();
   integration("creates a snapshot for an immediate dependency's executables",
       () {
     servePackages((builder) {
       builder.serve("foo", "1.2.3", contents: [
         d.dir("bin", [
           d.file("hello.dart", "void main() => print('hello!');"),
           d.file("goodbye.dart", "void main() => print('goodbye!');"),
           d.file("shell.sh", "echo shell"),
           d.dir("subdir", [
             d.file("sub.dart", "void main() => print('sub!');")
@@ skipping 21 matching lines @@
 
     var process = pubRun(args: ['foo:hello']);
     process.stdout.expect("hello!");
     process.shouldExit();
 
     process = pubRun(args: ['foo:goodbye']);
     process.stdout.expect("goodbye!");
     process.shouldExit();
   });
 }