src repo CL: https://chromium-review.googlesource.com/c/chromium/src/+/1518245

Bug: 659808
Change-Id: Iea8bbcf0a58c4cb57a78d48488463643d6668664
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/1542363
Commit-Queue: Yun Liu <yliuyliu@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>