RtpTransportControllerSend has access to the same Environment as the caller, and thus can take RtcEventLog directly from it. Bug: None Change-Id: I4b20811d3f6de8193c63d6c58d0fe1204b3ec7b1 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/342040 Reviewed-by: Åsa Persson <asapersson@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41864}