Extend PeerConnectionE2EQualityTestFixture::VideoConfig with
min_encode_bitrate_bps and max_encode_bitrate_bps.
These are needed to be able to specify the bitrate to be used in tests.
Bug: None
Change-Id: I8af88020e9b364d924e2cecb2bdcc12bf287394d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/153352
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29219}