Video/Screenshare loopback tool.

webrtc/modules/congestion_controller/probe_bitrate_estimator.h

Index: webrtc/modules/congestion_controller/probe_bitrate_estimator.h
diff --git a/webrtc/modules/congestion_controller/probe_bitrate_estimator.h b/webrtc/modules/congestion_controller/probe_bitrate_estimator.h
index 1666a1a584f00f68e6158e2eb507dce0329bbc5b..4d936080d4118d817b287e58d3eae5b9fa8c4bca 100644
--- a/webrtc/modules/congestion_controller/probe_bitrate_estimator.h
+++ b/webrtc/modules/congestion_controller/probe_bitrate_estimator.h
@@ -28,7 +28,7 @@ class ProbeBitrateEstimator {
   // Returns the estimated bitrate if the probe completes a valid cluster.
   int HandleProbeAndEstimateBitrate(const PacketFeedback& packet_feedback);
 
-  rtc::Optional<int> FetchAndResetLastEstimatedBitrateBps();
+  rtc::Optional<int> FetchAndResetLastEstimatedBitrateBps(int64_t timeout = 0);
 
  private:
   struct AggregatedCluster {
@@ -48,6 +48,9 @@ class ProbeBitrateEstimator {
   std::map<int, AggregatedCluster> clusters_;
   RtcEventLog* const event_log_;
   rtc::Optional<int> estimated_bitrate_bps_;
+  int64_t last_estimate_update_ms_ = 0;
+  int64_t start_ = 0;
+  int cluster_id_ = -1;
 };
 
 }  // namespace webrtc