https://chromereviews.googleplex.com/9908014/ I was thinking about shipping ACM2 from the signal repository. There seems to be too many changes in one CL. BUG= R=andrew@webrtc.org, turaj@webrtc.org, xians@webrtc.org Review URL: https://webrtc-codereview.appspot.com/2171004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4733 4adac7df-926f-26a2-2b94-8c16560cd09d