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

sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.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.
-
 import '../../../lib/src/exit_codes.dart' as exit_codes;
 import '../../test_pub.dart';
-
 main() {
   initConfig();
   integration('fails if no package was given', () {
-    schedulePub(args: ["global", "activate"],
-        error: """
+    schedulePub(args: ["global", "activate"], error: """
             No package to activate given.
 
             Usage: pub global activate <package...>
             -h, --help      Print usage information for this command.
             -s, --source    The source used to find the package.
                             [git, hosted (default), path]
 
             Run "pub help" to see global options.""",
         exitCode: exit_codes.USAGE);
   });
 }