Roll to pickup pool changes

packages/barback/test/transformer/aggregate_many_to_many.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 barback.test.transformer.aggregate_many_to_many;
 
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 import 'package:path/path.dart' as path;
 
 import 'mock_aggregate.dart';
 
 /// An [AggregateTransformer] that takes all assets with a given extension,
 /// grouped by directory, adds to their contents.
 class AggregateManyToManyTransformer extends MockAggregateTransformer {
   /// The extension of assets to combine.
   final String extension;
 
   AggregateManyToManyTransformer(this.extension);
 
   String doClassifyPrimary(AssetId id) {
     if (id.extension != ".$extension") return null;
     return path.url.dirname(id.path);
   }
 
   Future doApply(AggregateTransform transform) {
     return getPrimaryInputs(transform).asyncMap((asset) {
       return asset.readAsString().then((contents) {
-        transform.addOutput(new Asset.fromString(
-            asset.id, "modified $contents"));
+        transform
+            .addOutput(new Asset.fromString(asset.id, "modified $contents"));
       });
     }).toList();
   }
 
   String toString() => "aggregate $extension->many";
 }