Since https://webrtc-review.googlesource.com/c/src/+/161447, frame_extra_info_ is modified from both the encoder thread and the callback thread. Bug: None Change-Id: Idece4d19cae6d8363428234721616f6ca6f85832 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/184121 Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Mirta Dvornicic <mirtad@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32095}