65ab5fd728
relax DCHECK and explain when it previous version could be hit. Use concise versions of the GetExtension functions. Reduce scope of the `lock_` Bug: None Change-Id: Iafc570ffe7e5b2dcbdfe166b26b140f7959c28c7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291711 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39246}