This CL makes a number of test use the paced sender callback to verify the output of RTPSender, instead of re-parsed data from RtpSenderEgres. Bug: webrtc:11340 Change-Id: I13ccf5a5db4b6df128cf2fa9e8dad443fcd15cdd Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/220162 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34126}