IsTrailSurrogate  967 third_party/protobuf/src/google/protobuf/io/tokenizer.cc   GOOGLE_DCHECK(IsTrailSurrogate(trail_surrogate));
IsTrailSurrogate  998 third_party/protobuf/src/google/protobuf/io/tokenizer.cc         IsTrailSurrogate(trail_surrogate)) {