TBR=kjellander@chromium.org
BUG=libyuv:712
TEST=libyuv try bots build

Change-Id: Ibe2ff9ac557d5086566941d93f71d1b8048dfb58
Reviewed-on: https://chromium-review.googlesource.com/579663Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@google.com>