zstein e8ab543589 Make BaseChannel::rtp_transport_ a unique_ptr.
This will eventually be a unique_ptr<RtpTransportInternal> so that we can choose to use an RtpTransport or SrtpTransport.

BUG=None

Review-Url: https://codereview.webrtc.org/2974903003
Cr-Commit-Position: refs/heads/master@{#18987}
2017-07-12 18:48:11 +00:00
..
2017-07-11 13:20:45 +00:00
2016-04-26 12:28:18 +00:00