There are many different clocks used for testing. One day there will
only be one but for now this function needs to support them all.
Bug: webrtc:381524905
Change-Id: I8e240167af2ada2494420c751722f8e0dc97f0d2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/371303
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Auto-Submit: Evan Shrubsole <eshr@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43580}
