Always set render delay in ViEChannel::RegisterExternalDecoder.

BUG=1523

Review URL: https://webrtc-codereview.appspot.com/1219007

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3790 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed