ref: 1d13a6c321b3af595adb59f175894ebb9c36c1d6
parent: 13dc6d671ccd88a8af021b1b682400bf16b6c7c6
parent: b1072a793d4957e5a504d125ae5ded808b90060d
author: Sai Deng <sdeng@google.com>
date: Tue Jun 4 12:10:51 EDT 2019
Merge "Hierarchical rdmult scaling when tune=ssim"