Step 1 of combining the sender and receiver types Also moved the RtpFrameObject to rtp_rtcp/source, as it's heavily used by the transformable receiver frame, I couldn't work out a better way of managing the dependencies, and everything else seemed to work fine. Bug: chromium:1412687 Change-Id: I55e816a0d7aa2962560ff9ebaf30ad63ab0b9810 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291710 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Tony Herre <herre@google.com> Cr-Commit-Position: refs/heads/main@{#39255}