ref: 12084f6d5751b32673868e29ccd00633f196ffaa
parent: 93c0b879d48dcb3219883743580c22c2278b7779
parent: f3e7539c6786eb97014f623d8b4ee967b5bdac1c
author: Marco Paniconi <marpan@google.com>
date: Tue Dec 15 11:46:06 EST 2015
Merge "Revert "Add "unknown" status for noise estimation.""