Another step of the transition needed to reland cl
https://webrtc-review.googlesource.com/62062, and move payload_name
and payload_type out of VideoSendStream::Config::EncoderSettings.
If the new fields are set, values of the old fields are ignored.
Bug: webrtc:8830
Change-Id: I1f0cd56fd6b13b05608b284afc92523707887e25
Reviewed-on: https://webrtc-review.googlesource.com/64101
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22562}