vkr: some prep work for global fencing
First two commits of !501 (closed). I think these two can be merged. The rest of !501 (closed) probably needs to be Chrome OS specific.
/cc @zzyiwei
First two commits of !501 (closed). I think these two can be merged. The rest of !501 (closed) probably needs to be Chrome OS specific.
/cc @zzyiwei