KillDnsTask      1232 net/dns/host_resolver_impl.cc       KillDnsTask();
KillDnsTask      1339 net/dns/host_resolver_impl.cc       KillDnsTask();
KillDnsTask      1578 net/dns/host_resolver_impl.cc       KillDnsTask();
KillDnsTask      1659 net/dns/host_resolver_impl.cc       KillDnsTask();