DnsHostsKey        21 net/dns/dns_hosts.h   typedef std::pair<std::string, AddressFamily> DnsHostsKey;
DnsHostsKey        58 net/dns/dns_hosts.h typedef base::hash_map<DnsHostsKey, IPAddressNumber> DnsHosts;
DnsHostsKey        62 net/dns/dns_hosts.h typedef std::map<DnsHostsKey, IPAddressNumber> DnsHosts;