Add AlrDetector

webrtc/modules/congestion_controller/include/congestion_controller.h

Index: webrtc/modules/congestion_controller/include/congestion_controller.h
diff --git a/webrtc/modules/congestion_controller/include/congestion_controller.h b/webrtc/modules/congestion_controller/include/congestion_controller.h
index 862f2cd6be487589e3af4875220e25637d14e259..073b715936b98d4779f52e76dadbea9b3e83216c 100644
--- a/webrtc/modules/congestion_controller/include/congestion_controller.h
+++ b/webrtc/modules/congestion_controller/include/congestion_controller.h
@@ -28,6 +28,7 @@ struct SentPacket;
 
 namespace webrtc {
 
+class AlrDetector;
 class BitrateController;
 class Clock;
 class ProbeController;
@@ -118,6 +119,7 @@ class CongestionController : public CallStatsObserver, public Module {
   Clock* const clock_;
   Observer* const observer_;
   const std::unique_ptr<PacketRouter> packet_router_;
+  const std::unique_ptr<AlrDetector> alr_detector_;
   const std::unique_ptr<PacedSender> pacer_;
   const std::unique_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_;
   const std::unique_ptr<BitrateController> bitrate_controller_;