This will be used when adaptivePtime is enabled.
Bug: chromium:1086942
Change-Id: I63c947c53a8c5b8e0825b78b847c3f7900197d6c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177421
Reviewed-by: Minyue Li <minyue@webrtc.org>
Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31544}