ref: 48c4a038eb8322824927e86e0f9fc215c3cbc1e2
parent: af3cab7b245fd8f60ed6a0699f6321ac19986515
author: James Zern <jzern@google.com>
date: Tue Jun 27 16:32:15 EDT 2017
vp9: remove (un)lock_buffer_pool there is no threaded access to this pool after the removal of frame_parallel_decode BUG=webm:1395 Change-Id: I710769b87102edc898c59eb9a2e7a91d8c49107f