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

sdk/lib/_internal/pub_generated/test/global/run/missing_executable_arg_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/run/missing_executable_arg_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/run/missing_executable_arg_test.dart b/sdk/lib/_internal/pub_generated/test/global/run/missing_executable_arg_test.dart
similarity index 55%
copy from sdk/lib/_internal/pub/test/global/run/missing_executable_arg_test.dart
copy to sdk/lib/_internal/pub_generated/test/global/run/missing_executable_arg_test.dart
index 3e7a075a523f5c9e92d305ddf86930cb325b48ae..d0d42dee2c214c5b1bc26e10d516cd8b0830c394 100644
--- a/sdk/lib/_internal/pub/test/global/run/missing_executable_arg_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/global/run/missing_executable_arg_test.dart
@@ -1,22 +1,15 @@
-// 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 executable was given', () {
-    schedulePub(args: ["global", "run"],
-        error: """
+    schedulePub(args: ["global", "run"], error: """
             Must specify an executable to run.
 
             Usage: pub global run <package>:<executable> [args...]
             -h, --help    Print usage information for this command.
 
             Run "pub help" to see global options.
-            """,
-        exitCode: exit_codes.USAGE);
+            """, exitCode: exit_codes.USAGE);
   });
 }