ref: 99ef2f75e9ea58f4bdc5bb86be0bc6b9fb696cce
parent: 762df0b95b5b653700f551728c257b8264bc040c
parent: b07ae88ec490cde22ce16435b038822d442f7163
author: Dmitry Kovalev <dkovalev@google.com>
date: Mon Mar 10 06:40:44 EDT 2014
Merge "Cleaning up optimize_b() function."