When the RDD and GPU processes crashed simultaneously, we could get into a position where we would try to recreate PVideoBridge between the RDD and GPU processes, before bringing back up the RDD process. We should now skip reinitializing the protocol if the RDD process is unavailable. Original Revision: https://phabricator.services.mozilla.com/D175044 Differential Revision: https://phabricator.services.mozilla.com/D270327