ScheduleXmppPing  120 chrome/service/cloud_print/cloud_print_proxy_backend.cc   void ScheduleXmppPing();
ScheduleXmppPing  448 chrome/service/cloud_print/cloud_print_proxy_backend.cc     ScheduleXmppPing();
ScheduleXmppPing  528 chrome/service/cloud_print/cloud_print_proxy_backend.cc   ScheduleXmppPing();