This CL moves send_side_bandwidth_estimation.cc/h and loss_based_bandwidth_estimation.cc/h from modules/bitrate_controller to modules/congestion_controller/goog_cc. Bug: webrtc:9883 Change-Id: Ibb2c2ba3762007e7e5114f39042ee96431b73776 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/154346 Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29297}