63643357b4
It seems like this is legacy and not useful. A comment mentions transitioning between CNG and DTMF modes, but there is no way this can happen currently. Bug: webrtc:13322 Change-Id: I9e4706cb6ee145ee37a9e11e7cab6ea4ff697dc4 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/297980 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39590}