
After this change, it is only recreated when needed. This change also clarifies the relation between the compression session and the pixel buffer pool, and handles invalid sessions explicitly. Change-Id: Iae4aa02b60b0d5c153db3ae2d4cd2a0cfa05757b Bug: webrtc:9562 Reviewed-on: https://webrtc-review.googlesource.com/90403 Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Commit-Queue: Peter Hanspers <peterhanspers@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24161}