This is a followup to https://webrtc-review.googlesource.com/61640, which ensures that picture id and tl0 pic idx are continuous, independent of how the encoder objects are created and destroyed. The plan is to later move responsibility for encoder creation to VideoSendStream::ReconfigureVideoEncoder, delegating work to VideoStreamEncoder. Bug: webrtc:8830 Change-Id: Idde5c91f24d3c0e3fa6a3bb26eb06f6800896a28 Reviewed-on: https://webrtc-review.googlesource.com/62082 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22473}