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

sdk/lib/_internal/pub_generated/test/lish/package_validation_has_a_warning_and_continues_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.
-
 import 'dart:convert';
-
 import 'package:scheduled_test/scheduled_server.dart';
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:shelf/shelf.dart' as shelf;
-
 import '../../lib/src/exit_codes.dart' as exit_codes;
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
-
 main() {
   initConfig();
   setUp(d.validPackage.create);
-
   integration('package validation has a warning and continues', () {
     var pkg = packageMap("test_pkg", "1.0.0");
     pkg["author"] = "Natalie Weizenbaum";
     d.dir(appPath, [d.pubspec(pkg)]).create();
-
     var server = new ScheduledServer();
     d.credentialsFile(server, 'access token').create();
     var pub = startPublish(server);
     pub.writeLine("y");
     handleUploadForm(server);
     handleUpload(server);
-
     server.handle('GET', '/create', (request) {
       return new shelf.Response.ok(JSON.encode({
-        'success': {'message': 'Package test_pkg 1.0.0 uploaded!'}
+        'success': {
+          'message': 'Package test_pkg 1.0.0 uploaded!'
+        }
       }));
     });
-
     pub.shouldExit(exit_codes.SUCCESS);
     pub.stdout.expect(consumeThrough('Package test_pkg 1.0.0 uploaded!'));
   });
 }