ref: 8dd3bef7efb00fa3f6f219e61c72bd6b60f1fdd2
parent: 8c7751e1c2e017ce8e0c8d5705bf05614d36fee2
parent: 248f6ad77104310b48ee198b37f807a9b31d28dd
author: Hui Su <huisu@google.com>
date: Wed Jul 13 17:30:11 EDT 2016
Merge "Revert "Eliminate isolated and small tail coefficients:""