message: Add a warning to tell unrecognized command-line flags.
diff: @@ -220,6 +220,11 @@ void BenchmarkPerformanceOptions::Run(int argc, char** argv) {
  return;
  }
  + // Now, the remaining are unrecognized flags and we simply print them out.
  + for (int i = 1; i < argc; ++i) {
  + TFLITE_LOG(WARN) << "WARNING: unrecognized commandline flag: " << argv[i];
  + }
  +
  Run();
  all_run_stats_->OutputStats();
  