Improves playback performance for 1080p video on www.youku.com

BUG=libyuv:841

Change-Id: Iabe7693fba276162af0290863f46e214ab86fb6c
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/1790959Reviewed-by: Miguel Casas <mcasas@chromium.org>