message: Always enable --incremental.
diff: @@ -464,7 +464,9 @@ do_clang_format_check() {
  return 0
  fi
  elif [[ -z "$1" ]]; then
  - CLANG_SRC_FILES=$(get_clang_files_to_check)
  + # TODO (yongtang): Always pass --incremental until all files have
  + # been sanitized gradually. Then this --incremental could be removed.
  + CLANG_SRC_FILES=$(get_clang_files_to_check --incremental)
  else
  echo "Invalid syntax for invoking do_clang_format_check"
  echo "Usage: do_clang_format_check [--incremental]"
  