Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart

Index: sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart b/sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart
index ad0084d8f24377e4ede6dbe8b3734cae155dd0ed..f6fe879850c6d0c51521e0e2d9185a82e03991ce 100644
--- a/sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/run/passes_along_arguments_test.dart
@@ -1,17 +1,27 @@
+// 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 '../descriptor.dart' as d;
 import '../test_pub.dart';
+
 const SCRIPT = """
 main(List<String> args) {
   print(args.join(" "));
 }
 """;
+
 main() {
   initConfig();
   integration('passes arguments to the spawned script', () {
     d.dir(
         appPath,
         [d.appPubspec(), d.dir("bin", [d.file("args.dart", SCRIPT)])]).create();
+
+    // Use some args that would trip up pub's arg parser to ensure that it
+    // isn't trying to look at them.
     var pub = pubRun(args: ["args", "--verbose", "-m", "--", "help"]);
+
     pub.stdout.expect("--verbose -m -- help");
     pub.shouldExit();
   });