message: Consistently use signed int for byte-offset comparisons.
diff: @@ -157,12 +157,12 @@ FindFormatTokensInByteOffsetRange(
  std::pair<int, int> byte_offset_range, absl::string_view base_text) {
  const auto tokens_begin =
  std::lower_bound(begin, end, byte_offset_range.first,
  - [=](const verible::PreFormatToken& t, size_t position) {
  + [=](const verible::PreFormatToken& t, int position) {
  return t.token->left(base_text) < position;
  });
  const auto tokens_end =
  std::upper_bound(tokens_begin, end, byte_offset_range.second,
  - [=](size_t position, const verible::PreFormatToken& t) {
  + [=](int position, const verible::PreFormatToken& t) {
  return position < t.token->right(base_text);
  });
  return verible::make_range(tokens_begin, tokens_end);
  