This ensures that SendSideCongestionController is always initialized with starting bitrate and bitrate limits. Bug: webrtc:8415 Change-Id: If3b75e935dda755f9e0f40af1021f97ff150c9e9 Reviewed-on: https://webrtc-review.googlesource.com/59224 Reviewed-by: Björn Terelius <terelius@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22370}