ref: 67cffc1ef6cd15eaf8e4b319a7308d351c9d8177
parent: b0d15713beb8559d76eee9bf5c86ab70edbcdff4
author: Johann <johannkoenig@google.com>
date: Thu Jul 6 04:55:05 EDT 2017
sad neon: avg for 32x[16,32,64] BUG=webm:1425 Change-Id: I3362e0dded3b46ca032caa7f44db42f324bc596d