This CL adds [[deprecated]] to the old signatures, and uses the new signatures throughout. Bug: webrtc:14870 Change-Id: Ic9a8198ac0a2f954e1b2e7d05a55dbe04342f958 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/314962 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40517}