This change switches from the old codec wrapper ACMPCM16B to the new AudioEncoderPcm16B wrapped in an ACMGenericCodecWrapper. BUG=4228 COAUTHOR=kwiberg@webrtc.org R=tina.legrand@webrtc.org Review URL: https://webrtc-codereview.appspot.com/33249004 Cr-Commit-Position: refs/heads/master@{#8324} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8324 4adac7df-926f-26a2-2b94-8c16560cd09d