ref: 8d49d02a24e40fe9eb8a2ce2820987a9d8d1c0e6
parent: 3ac2b57015000dde5731ceb9fc824e86747c5945
parent: 5f8e24161e4c5c565e6135a51232d95ccdd3dfd9
author: Jerome Jiang <jianj@google.com>
date: Mon Jun 11 12:43:44 EDT 2018
Merge "vp9 svc: clean up first_spatial_layer_to_encode."