convert much of media/ (and the collateral) Bug: webrtc:10335 Change-Id: I04489dfe9622efe7f89e04aba3be6b3f60e77c91 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/254520 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Jonas Oreland <jonaso@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36177}