ref: 3316e2654f2cb5cf4052672a5a0e325f674523b6
parent: 7fc5e742320f6601f21098a45121b25a7ac52830
author: Yaowu Xu <yaowu@google.com>
date: Thu May 15 14:49:53 EDT 2014
Remove unused varables Change-Id: Ieb508d97026d624e853c2cd61b1ddf3591bf8233