The send-side increase factor is increased to better follow the pace of the receive-side estimate, while the receive-side factor is increased to speed up adaptation. BUG= TEST= Review URL: http://webrtc-codereview.appspot.com/297002 git-svn-id: http://webrtc.googlecode.com/svn/trunk@1030 4adac7df-926f-26a2-2b94-8c16560cd09d