These two elements are required for end-to-end delay estimation. BUG=1788 R=stefan@webrtc.org TBR=pthatcher@webrtc.org Review URL: https://webrtc-codereview.appspot.com/36909004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@8139 4adac7df-926f-26a2-2b94-8c16560cd09d