ref: 065809d28640c7f984cec1892e7938e0c4edbe05
parent: 3f79359e0ac494295773d63570b957a89306d01b
author: Yaowu Xu <yaowu@google.com>
date: Thu Oct 23 04:27:25 EDT 2014
Move filter_ref initialization To outside the loop to avoid repeating the operations. Change-Id: I66c1986e98ce0d7594caad3d3b45de655b299bff