PT_SLAVE_FD        55 chromeos/process_proxy/process_proxy.cc   process_launched_ = LaunchProcess(command, pt_pair_[PT_SLAVE_FD], &pid_);
PT_SLAVE_FD        59 chromeos/process_proxy/process_proxy.cc     CloseFd(&pt_pair_[PT_SLAVE_FD]);
PT_SLAVE_FD       208 chromeos/process_proxy/process_proxy.cc     pt_pair_[PT_SLAVE_FD] = HANDLE_EINTR(open(slave_name, O_RDWR | O_NOCTTY));
PT_SLAVE_FD       210 chromeos/process_proxy/process_proxy.cc   if (pt_pair_[PT_SLAVE_FD] == -1) {