Added API to port internal speech probability in NS.

Identical with CL652007 that's already been accepted for commit.

TBR=andrew@webrtc.org
BUG=None
TEST=None
Review URL: https://webrtc-codereview.appspot.com/670009

git-svn-id: http://webrtc.googlecode.com/svn/trunk/data@2511 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed