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

sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart

-// Copyright (c) 2014, 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.
-
 library pub_tests;
-
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
-
 const DECLARING_TRANSFORMER = """
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 
 class DeclaringRewriteTransformer extends Transformer
     implements DeclaringTransformer {
   DeclaringRewriteTransformer.asPlugin();
 
   String get allowedExtensions => '.out';
 
   Future apply(Transform transform) {
     transform.logger.info('Rewriting \${transform.primaryInput.id}.');
     return transform.primaryInput.readAsString().then((contents) {
       var id = transform.primaryInput.id.changeExtension(".final");
       transform.addOutput(new Asset.fromString(id, "\$contents.final"));
     });
   }
 
   Future declareOutputs(DeclaringTransform transform) {
     transform.declareOutput(transform.primaryId.changeExtension(".final"));
     return new Future.value();
   }
 }
 """;
-
 main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("supports a user-defined declaring transformer", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["myapp/src/lazy", "myapp/src/declaring"]
         }),
-        d.dir("lib", [d.dir("src", [
-          // Include a lazy transformer before the declaring transformer,
-          // because otherwise its behavior is indistinguishable from a normal
-          // transformer.
-          d.file("lazy.dart", LAZY_TRANSFORMER),
-          d.file("declaring.dart", DECLARING_TRANSFORMER)
-        ])]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
-
+            d.dir(
+                "lib",
+                [
+                    d.dir(
+                        "src",
+                        [
+                            d.file("lazy.dart", LAZY_TRANSFORMER),
+                            d.file("declaring.dart", DECLARING_TRANSFORMER)])]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
       createLockFile('myapp', pkg: ['barback']);
-
       var server = pubServe();
-      // The build should complete without either transformer logging anything.
       server.stdout.expect('Build completed successfully');
-
       requestShouldSucceed("foo.final", "foo.out.final");
-      server.stdout.expect(emitsLines(
-          '[Info from LazyRewrite]:\n'
-          'Rewriting myapp|web/foo.txt.\n'
-          '[Info from DeclaringRewrite]:\n'
-          'Rewriting myapp|web/foo.out.'));
+      server.stdout.expect(
+          emitsLines(
+              '[Info from LazyRewrite]:\n' 'Rewriting myapp|web/foo.txt.\n'
+                  '[Info from DeclaringRewrite]:\n' 'Rewriting myapp|web/foo.out.'));
       endPubServe();
     });
   });
 }