0ac50b9dfd
This is a preparatory step in deleting the ChannelManager class. Also delete some declarations whose implementation was previously removed. Bug: webrtc:13931 Change-Id: I8764c00fa696932e79fcfe17550ef2490d6a1ed1 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/262804 Reviewed-by: Henrik Boström <hbos@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36923}