30   std::string::const_iterator comma = std::find(after_colon, end, ',');  in Parse()  local
31   if (comma == end)  in Parse()
36       std::search(after_colon, comma, kBase64Tag,  in Parse()
39   bool base64_encoded = (it != comma);  in Parse()
41   if (comma != after_colon) {  in Parse()
43     std::string::const_iterator semi_colon = std::find(after_colon, comma, ';');  in Parse()
48     if (semi_colon != comma) {  in Parse()
50       it = std::search(semi_colon + 1, comma, kCharsetTag,  in Parse()
52       if (it != comma)  in Parse()
53         charset->assign(it + sizeof(kCharsetTag)-1, comma);  in Parse()
74   std::string temp_data = std::string(comma + 1, end);  in Parse()