The metrics of interest are the pacer rate, both normally and during a
queue drain, as well as padding rate.
Bug: None
Change-Id: I9c36219f63ce61b46f20d42678e0d97cb2a1873c
Reviewed-on: https://webrtc-review.googlesource.com/c/123195
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Konrad Hofbauer <hofbauer@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26855}
fee13e8c0d