Remove AudioCodingModule's dependency on the Module interface

BUG=3520
COAUTHOR=kwiberg@webrtc.org
R=minyue@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/42069004

Cr-Commit-Position: refs/heads/master@{#8500}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8500 4adac7df-926f-26a2-2b94-8c16560cd09d
3 files changed