SetSignalMask     296 base/process/launch_posix.cc   const sigset_t orig_sigmask = SetSignalMask(full_sigset);
SetSignalMask     315 base/process/launch_posix.cc     SetSignalMask(orig_sigmask);
SetSignalMask     383 base/process/launch_posix.cc     SetSignalMask(orig_sigmask);