Merge "DO NOT MERGE libvpx: Cherry-pick 8b4c315 from upstream" into nyc-dev am: 104774bcff am: e2a7f89f1f am: 3ca6c997a2 am: e6b02d2ad3 am: 4e8c22b7bd  -s ours am: 6c2620a0cf am: 634404ef29
am: cf8b926462

Change-Id: Ie3e45a2e4f7160170fbb6ac49ebcba64b9a5c425