SetPreviousProc    62 net/dns/host_resolver_proc.cc   SetPreviousProc(previous);
SetPreviousProc    66 net/dns/host_resolver_proc.cc     SetPreviousProc(default_proc_);
SetPreviousProc    97 net/dns/host_resolver_proc.cc   GetLastProc(this)->SetPreviousProc(proc);
SetPreviousProc    59 net/dns/host_resolver_proc.h   void SetPreviousProc(HostResolverProc* proc);