11 namespace brillo {  namespace
73       brillo::string_utils::Split(mime_string, ";");  in Split()
84       auto pair = brillo::string_utils::SplitAtFirst(parts[i], "=");  in Split()
96   auto types = brillo::string_utils::SplitAtFirst(mime, "/");  in Split()
111   parts.push_back(brillo::string_utils::Join("/", type, subtype));  in Combine()
114         brillo::string_utils::Join("=", pair.first, EncodeParam(pair.second)));  in Combine()
116   return brillo::string_utils::Join("; ", parts);  in Combine()
121   return brillo::string_utils::SplitAtFirst(mime, "/").first;  in GetType()
126   return brillo::string_utils::SplitAtFirst(mime, "/").second;  in GetSubtype()
141   return brillo::string_utils::SplitAtFirst(mime_string, ";").first;  in RemoveParameters()
149   mime += brillo::string_utils::Join("=", paramName, EncodeParam(paramValue));  in AppendParameter()