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

sdk/lib/_internal/pub_generated/test/transformer/runs_a_transformer_on_a_dependency_test.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.
-
 library pub_tests;
-
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
-
 main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("runs a local transformer on a dependency", () {
-      d.dir("foo", [
-        d.pubspec({
+      d.dir("foo", [d.pubspec({
           "name": "foo",
           "version": "0.0.1",
           "transformers": ["foo/transformer"]
         }),
-        d.dir("lib", [
-          d.file("transformer.dart", REWRITE_TRANSFORMER),
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
-
-      d.dir(appPath, [
-        d.appPubspec({"foo": {"path": "../foo"}}),
-      ]).create();
-
+            d.dir(
+                "lib",
+                [
+                    d.file("transformer.dart", REWRITE_TRANSFORMER),
+                    d.file("foo.txt", "foo")])]).create();
+      d.dir(appPath, [d.appPubspec({
+          "foo": {
+            "path": "../foo"
+          }
+        })]).create();
       createLockFile('myapp', sandbox: ['foo'], pkg: ['barback']);
-
       pubServe();
       requestShouldSucceed("packages/foo/foo.out", "foo.out");
       endPubServe();
     });
   });
 }