std::string Url::EncodeHost(string_view utf8_str) {
  return EncodeImpl(utf8_str, [](int c) -> bool { return c > 127; });
}
std::string Url::EncodeHost(string_view utf8_str) {
  return EncodeImpl(utf8_str, [](int c) -> bool { return c > 127; });
}