Reland "Wire up send-side bandwidth estimation."

webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc

Index: webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc b/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc
index 4c01098f0b32aa9ad044cd31f53352c6bc57b62e..5f51bc55e9c10e92a2591054a888a36faec645be 100644
--- a/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc
+++ b/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.cc
@@ -107,6 +107,7 @@ void TransportFeedbackAdapter::OnTransportFeedback(
                       << ". Send time history too small?";
     }
   }
+
   RTC_DCHECK(bitrate_estimator_.get() != nullptr);
   bitrate_estimator_->IncomingPacketFeedbackVector(packet_feedback_vector);
 }