30     std::string content;  in ReadMetadata()  local
31     if (!base::ReadFileToString(path, &content)) {  in ReadMetadata()
38     if (content.size() < length_prefix_bytes) {  in ReadMetadata()
39         return Error() << "Invalid metadata: size == " << content.size();  in ReadMetadata()
41     size = be32toh(*reinterpret_cast<uint32_t*>(content.data()));  in ReadMetadata()
42     if (content.size() < length_prefix_bytes + size) {  in ReadMetadata()
44                        << content.size() - length_prefix_bytes << ")";  in ReadMetadata()
46     content = content.substr(length_prefix_bytes, size);  in ReadMetadata()
50     if (!metadata.ParseFromString(content)) {  in ReadMetadata()
58     std::string content;  in WriteMetadata()  local
59     if (!metadata.SerializeToString(&content)) {  in WriteMetadata()
64     uint32_t size = htobe32(static_cast<uint32_t>(content.size()));  in WriteMetadata()
68     out << content;  in WriteMetadata()