deadbeef fb2aceded6 Add video send SSRC to RtpParameters, and don't allow changing SSRC.
With this, RtpSender and RtpReceiver will always return an SSRC if one
is available. Also, attempts to change the SSRC with SetParameters will
fail, rather than silently doing nothing.

BUG=webrtc:6888

Review-Url: https://codereview.webrtc.org/2567333004
Cr-Commit-Position: refs/heads/master@{#15939}
2017-01-07 07:05:37 +00:00
..