Currently, the stable target can grow to 2x the max allocated bitrate.
Bug: None
Change-Id: I71657cb49ebebd429aae0bcd2e2978938252115c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170222
Reviewed-by: Sam Zackrisson <saza@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30776}