Video/Screenshare loopback tool.

webrtc/modules/remote_bitrate_estimator/send_time_history.cc

Index: webrtc/modules/remote_bitrate_estimator/send_time_history.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/send_time_history.cc b/webrtc/modules/remote_bitrate_estimator/send_time_history.cc
index 4cc7a7c1c20c5a009757ae1f5e27742448b6e0f0..ea1ccaa99b69572190091cd4c839d746456dabe2 100644
--- a/webrtc/modules/remote_bitrate_estimator/send_time_history.cc
+++ b/webrtc/modules/remote_bitrate_estimator/send_time_history.cc
@@ -41,9 +41,16 @@ bool SendTimeHistory::OnSentPacket(uint16_t sequence_number,
                                    int64_t send_time_ms) {
   int64_t unwrapped_seq_num = seq_num_unwrapper_.Unwrap(sequence_number);
   auto it = history_.find(unwrapped_seq_num);
-  if (it == history_.end())
+  if (it == history_.end()) {
+    Print("No history for %u", sequence_number);
     return false;
+  }
   it->second.send_time_ms = send_time_ms;
+  int cluster_id = it->second.pacing_info.probe_cluster_id;
+  if (cluster_id > -1) {
+    Print("Sent packet %u of size %lu for probe cluster %d", sequence_number,
+          it->second.payload_size, cluster_id);
+  }
   return true;
 }