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

sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/activate/missing_package_arg_test.dart b/sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.dart
similarity index 66%
copy from sdk/lib/_internal/pub/test/global/activate/missing_package_arg_test.dart
copy to sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.dart
index 9469de2d7faea02aea2ddc7eff4ae617ef991a80..b2eec9e15b27d407c9e9f06172491d5b19b55e37 100644
--- a/sdk/lib/_internal/pub/test/global/activate/missing_package_arg_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/global/activate/missing_package_arg_test.dart
@@ -1,15 +1,9 @@
-// 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...>