Add AlrDetector

webrtc/modules/congestion_controller/congestion_controller.cc

Index: webrtc/modules/congestion_controller/congestion_controller.cc
diff --git a/webrtc/modules/congestion_controller/congestion_controller.cc b/webrtc/modules/congestion_controller/congestion_controller.cc
index c0ec3da0f9a42bca4b75d8e1a18d47c61659e08c..3187a12002051df304f45a09991b6cd8624bf010 100644
--- a/webrtc/modules/congestion_controller/congestion_controller.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller.cc
@@ -23,6 +23,7 @@
 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/modules/congestion_controller/delay_based_bwe.h"
 #include "webrtc/modules/congestion_controller/probe_controller.h"
+#include "webrtc/modules/congestion_controller/alr_detector.h"
 #include "webrtc/modules/remote_bitrate_estimator/include/send_time_history.h"
 #include "webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.h"
 #include "webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.h"
@@ -162,7 +163,9 @@ CongestionController::CongestionController(
     : clock_(clock),
       observer_(observer),
       packet_router_(new PacketRouter()),
-      pacer_(new PacedSender(clock_, packet_router_.get())),
+      alr_detector_(new AlrDetector()),
+      pacer_(
+          new PacedSender(clock_, packet_router_.get(), alr_detector_.get())),
       remote_bitrate_estimator_(
           new WrappingBitrateEstimator(remote_bitrate_observer, clock_)),
       bitrate_controller_(
@@ -191,6 +194,7 @@ CongestionController::CongestionController(
     : clock_(clock),
       observer_(observer),
       packet_router_(std::move(packet_router)),
+      alr_detector_(new AlrDetector()),
       pacer_(std::move(pacer)),
       remote_bitrate_estimator_(
           new WrappingBitrateEstimator(remote_bitrate_observer, clock_)),
@@ -346,6 +350,7 @@ void CongestionController::MaybeTriggerOnNetworkChanged() {
   if (estimate_changed) {
     pacer_->SetEstimatedBitrate(bitrate_bps);
     probe_controller_->SetEstimatedBitrate(bitrate_bps);
+    alr_detector_->SetEstimatedBitrate(bitrate_bps);
     retransmission_rate_limiter_->SetMaxRate(bitrate_bps);
   }