message: [Reproducers] Print warning when generating the reproducer.
  Encourage users to look at the directory so they know what data they'd
  be sharing by uploading the reproducer.
diff: @@ -49,6 +49,9 @@ protected:
  result.GetOutputStream()
  << "Reproducer written to '" << r.GetReproducerPath() << "'\n";
  + result.GetOutputStream()
  + << "Please have a look at the directory to assess if you're willing to "
  + "share the contained information.\n";
  result.SetStatus(eReturnStatusSuccessFinishResult);
  return result.Succeeded();
  