ref: 6dba2fb7774e9f02ff7bb4e2778a614a70720f44
parent: 2013915a95eca827456e999dce1554a5875c7baf
author: Jingning Han <jingning@google.com>
date: Sat Jul 21 12:04:34 EDT 2018
Scale the distortion mectric with tx size Properly scale the distortion metric according to the tranfer function gain of the transform block size. Change-Id: I8e3539d8936f5db78c1352f902f72ef19fc09ed8