ref: 0178d974e529c0e7592ccd1be926d91b8935eb0d
parent: 4412996d5989104f34f200b0bf87aed5bd41ed05
author: Linfeng Zhang <linfengz@google.com>
date: Tue May 2 10:14:06 EDT 2017
Clean specializes of idct functions Change-Id: I8bb660de47b5f97263ec381dc428db96e9c9a4b2