The goal is to remove the dependency between PeerConfigurerImpl and PeerConnectionE2EQualityTestFixture so that PeerConfigurerImpl can be used in PeerConnectionE2EQualityTestFixture API. Change-Id: I29ae44b9d0e39075d0c395ff9d9f8d313be12176 Bug: webrtc:14627 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/281740 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Artem Titov <titovartem@webrtc.org> Commit-Queue: Jeremy Leconte <jleconte@google.com> Cr-Commit-Position: refs/heads/main@{#38560}