ProcessOutputCallbackWithPid   70 chromeos/process_proxy/process_proxy_registry.cc     const ProcessOutputCallbackWithPid& callback) {
ProcessOutputCallbackWithPid   32 chromeos/process_proxy/process_proxy_registry.h     ProcessOutputCallbackWithPid callback;
ProcessOutputCallbackWithPid   45 chromeos/process_proxy/process_proxy_registry.h                    const ProcessOutputCallbackWithPid& callback);