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
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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