This reverts commit 08c46adc1e9f9a8d74357fe132a68906ae6e6974. Reason for revert: Incomplete. Original change's description: > Extracts ssrc based feedback tracking from feedback adapter. > > This prepares for moving TransportFeedbackAdapter to TaskQueue. > > Bug: webrtc:9883 > Change-Id: Ib333f6a6837ff6dd8b10813e8953e4d8cd5d8633 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/162040 > Reviewed-by: Erik Språng <sprang@webrtc.org> > Commit-Queue: Sebastian Jansson <srte@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#30076} TBR=sprang@webrtc.org,srte@webrtc.org Change-Id: I6a79e7627f9de2d8c876d6a13ca36f3ac06fde7f No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: webrtc:9883 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/162200 Reviewed-by: Sebastian Jansson <srte@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30087}