Fixing a number of issues in VCM and codec tests

Issues come from previous change to routing of CodecSpecificInfo.
A few tests are asserted out, and will be until the corresponding
routing has been made on the decoder side.
Review URL: http://webrtc-codereview.appspot.com/60007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@184 4adac7df-926f-26a2-2b94-8c16560cd09d
10 files changed