This channel is currently only used on Linux to rendez-vous with the crash helper, obtain its PID and use it to enable the process to be dumped when the Yama LSM is enabled. It will be used to actually request a dump in the future, when the breakpad exception handler is removed. Original Revision: https://phabricator.services.mozilla.com/D254047 Differential Revision: https://phabricator.services.mozilla.com/D262074