modp_b64_encode    16 base/base64.cc   size_t output_size = modp_b64_encode(&(temp[0]), input.data(), input.size());
modp_b64_encode    58 third_party/modp_b64/modp_b64.h size_t modp_b64_encode(char* dest, const char* str, size_t len);
modp_b64_encode   141 third_party/modp_b64/modp_b64.h     size_t d = modp_b64_encode(const_cast<char*>(x.data()), s.data(), (int)s.size());