Roll to pickup pool changes

packages/barback/test/transformer_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.
 
 library barback.test.transformer_test;
 
 import 'dart:async';
 
 import 'package:barback/barback.dart';
-import 'package:barback/src/utils.dart';
 import 'package:unittest/unittest.dart';
 
 import 'utils.dart';
 
 main() {
   initConfig();
 
   group("isPrimary", () {
     test("defaults to allowedExtensions", () {
       var transformer = new ExtensionTransformer(".txt .bin");
@@ skipping 33 matching lines @@
 
   Future apply(Transform transform) => new Future.value();
 }
 
 class ExtensionTransformer extends Transformer {
   final String allowedExtensions;
 
   ExtensionTransformer(this.allowedExtensions);
 
   Future apply(Transform transform) => new Future.value();
-}
+}