Use the new test runner.

test/build/outputs_results_to_json_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.
 
+// Dart2js can take a long time to compile dart code, so we increase the timeout
+// to cope with that.
+@Timeout.factor(3)
+
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 main() {
-  initConfig();
-
   integration("outputs results to JSON in a successful build", () {
-    // Dart2js can take a long time to compile dart code, so we increase the
-    // timeout to cope with that.
-    currentSchedule.timeout *= 3;
-
     d.dir(appPath, [
       d.appPubspec(),
       d.dir('web', [
         d.file('main.dart', 'void main() => print("hello");')
       ])
     ]).create();
 
     schedulePub(args: ["build", "--format", "json"],
         outputJson: {
           'buildResult': 'success',
@@ skipping 24 matching lines @@
                 'name': 'Dart2JS',
                 'primaryInput': {'package': 'myapp', 'path': 'web/main.dart'}
               },
               'assetId': {'package': 'myapp', 'path': 'web/main.dart'},
               'message': contains(r'Took')
             }
           ]
         });
   });
 }