In-lining GetNetworkParameters and MaybeUpdateCongestionWindow which
was left over from previous refactoring. This prepares for upcoming CLs
changing the behavior.
Bug: webrtc:9586
Change-Id: I6f038acdf97c3db2c85254a36592c617a5754a96
Reviewed-on: https://webrtc-review.googlesource.com/97605
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24570}