making it clear what unit is being used. BUG=webrtc:13756 Change-Id: I6354d35a8e02bb93a905ccf32cb0b294b4813e41 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/289460 Commit-Queue: Philipp Hancke <phancke@microsoft.com> Reviewed-by: Henrik Boström <hbos@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39008}