ref: 27a984fbd3876cfd4828edadc87703733b98bcf9
parent: ce28d0ca89832c36c56f22873732582edf9ce9a0
author: Dmitry Kovalev <dkovalev@google.com>
date: Wed Aug 21 07:55:04 EDT 2013
Removing a lot of duplicated code. Adding set_contexts contexts function and call it instead of set_contexts_on_border. Calling txfrm_block_to_raster_xy to get aoff and loff. Change-Id: I41897e344afd2cae1f923f4fdbe63daccf6fe80e