Add a dummy implemenation of SChannelAdapter::SetMode that makes sure that StartSSL fails if the mode is set to DTLS.

Also, update SslSocketFactory to fail if StartSSL fails.

R=juberti@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/33739004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@8014 4adac7df-926f-26a2-2b94-8c16560cd09d
3 files changed