Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/test/dart2js/output_can_be_consumed_by_successive_phases.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
-
-/// The code for a transformer that renames ".js" files to ".out".
 const JS_REWRITE_TRANSFORMER = """
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 
 class RewriteTransformer extends Transformer {
   RewriteTransformer.asPlugin();
 
   String get allowedExtensions => '.js';
 
   Future apply(Transform transform) {
     return transform.primaryInput.readAsString().then((contents) {
       var id = transform.primaryInput.id.changeExtension(".out");
       transform.addOutput(new Asset.fromString(id, contents));
     });
   }
 }
 """;
-
 main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("output can be consumed by successive phases", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["\$dart2js", "myapp/src/transformer"]
         }),
-        d.dir("lib", [d.dir("src", [
-          d.file("transformer.dart", JS_REWRITE_TRANSFORMER)
-        ])]),
-        d.dir("web", [d.file("main.dart", "void main() {}")])
-      ]).create();
-
+            d.dir(
+                "lib",
+                [d.dir("src", [d.file("transformer.dart", JS_REWRITE_TRANSFORMER)])]),
+            d.dir("web", [d.file("main.dart", "void main() {}")])]).create();
       createLockFile('myapp', pkg: ['barback']);
-
       pubServe();
       requestShouldSucceed("main.dart.out", isUnminifiedDart2JSOutput);
       endPubServe();
     });
   });
 }