This will reduce bias caused by uncertainty in averaging window. Bug: None Change-Id: I5c4fe39ffe69fb4af87d86995196a54115d3e0b2 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144720 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29374}