The code path it calls is no longer actually used and will be cleaned up in a follow-up CL. This prepares for simplifying the transport feedback adapter and moving it to run on a task queue. Bug: webrtc:9883 Change-Id: I750398069414ffa782067d021c0a3837049d98eb Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158621 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29638}