Was SSSE3 H010ToAR30_Opt (635 ms)
Now AVX2  H010ToAR30_Opt (448 ms)

Bug: libyuv:751
Test:  LibYUVConvertTest.H010ToAR30_Opt
Change-Id: I17b1a0e3268c4a9836e09683dd3377fb1ce60932
Reviewed-on: https://chromium-review.googlesource.com/889906
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>