This is in preparation for moving the assignment of PT numbers
to a different place.
Bug: webrtc:42226302
Change-Id: I821f2b6b15eb9f9f3715714e2c2c220c5e5a219e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/352921
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42422}
752a2b8afb