This allows sending the full BitrateAllocationUpdate to the encoder. This will be used in a later CL to use the link capacity field in the update to control the Opus decoder. Bug: webrtc:9718 Change-Id: I1c228cc318c7f9f1b0fec232e27732177b80705a Reviewed-on: https://webrtc-review.googlesource.com/c/111509 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25739}