ref: 1eb760e55d799475b361176bdf9e83532c77e9ba
parent: f137697c3294c9de01141a5a4b1405dcba4e98c8
author: Jingning Han <jingning@google.com>
date: Thu Sep 10 08:56:41 EDT 2015
Take out reference_masking speed feature This condition is not effectively in use. The actual reference frame masking is done in other route. Change-Id: Ia59c843bcac7243dada92f0f67658d7ce43df5e8