This clarifies the logic behind the pacer packet interval
in paused state and prepares for future congestion window
functionality.
Bug: None
Change-Id: Ibf6e23f73523b43742830353915b2b94d09a6fc9
Reviewed-on: https://webrtc-review.googlesource.com/52060
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22004}