before this CL it was only configured when pacer is used.
This CL sets it also when pacer is not used.
Move block for setting TransmissionOffset/AbsoluteTime extensions after pacer_ check
to stress in pacer case there are set(overwritten) in another function.
Bug: None
Change-Id: I06a6dd6ec689a25439a75b3baa71340535cd1ff8
Reviewed-on: https://webrtc-review.googlesource.com/c/112126
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25794}