Small style changes and better explanation. This is a continuation of https://webrtc-review.googlesource.com/c/src/+/6340 and https://chromium-review.googlesource.com/c/external/webrtc/+/660559. NOTRY=True # Fails on Android (this Python code doesn't run on Android!) Bug: webrtc:7218 Change-Id: Ic50f8842c796de201040857fd254009a566283c2 Reviewed-on: https://webrtc-review.googlesource.com/6761 Commit-Queue: Alex Loiko <aleloi@webrtc.org> Reviewed-by: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20176}