BUG=libyuv:795

Change-Id: Ic1eb6eb841e763c0d58e6fb36322addb3956d8f2
Reviewed-on: https://chromium-review.googlesource.com/1103311Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>