Those never existed, were likely a copy-paste error in the spec that we somehow inherited. Bug: webrtc:11607 Change-Id: Ib4a038f061123e879f1099656273f6392f092213 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/273485 Commit-Queue: Florent Castelli <orphis@webrtc.org> Auto-Submit: Florent Castelli <orphis@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37953}