Reason for revert: Caused issues with webrtc_perf_tests on build bots. Original issue's description: > Fix race / crash in OnNetworkRouteChanged(). > > To achieve this some refactoring was done to make it possible to synchronize > access to the DelayBasedBwe in TransportFeedbackAdapter: > - The callback was removed from DelayBasedBwe, it now instead returns its > result. > - TransportFeedbackAdapter was moved to modules/congestion_controller to avoid > unnecessary dependencies. > > Reenables previously disabled flaky test. Can no longer reproduce flakiness with gtest-parallel and asan/tsan builds. > > BUG=webrtc:6427, webrtc:6422 > > Committed: https://crrev.com/fd0d42669204e6dd92a60736bca7ae0196663024 > Cr-Commit-Position: refs/heads/master@{#14430} TBR=terelius@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:6427, webrtc:6422 Review-Url: https://codereview.webrtc.org/2377303002 Cr-Commit-Position: refs/heads/master@{#14433}