Media track ID visibility at BWE level

webrtc/video/video_send_stream.cc

Index: webrtc/video/video_send_stream.cc
diff --git a/webrtc/video/video_send_stream.cc b/webrtc/video/video_send_stream.cc
index 285b7ef0337ead836288c89c0970d024abef9be0..4f3144c0d12300b8e130b480d6a18180a92a37dc 100644
--- a/webrtc/video/video_send_stream.cc
+++ b/webrtc/video/video_send_stream.cc
@@ -920,7 +920,8 @@ void VideoSendStreamImpl::Start() {
 
   bitrate_allocator_->AddObserver(
       this, encoder_min_bitrate_bps_, encoder_max_bitrate_bps_,
-      max_padding_bitrate_, !config_->suspend_below_min_bitrate);
+      max_padding_bitrate_, !config_->suspend_below_min_bitrate,
+                                  config_->track_id);
 
   // Start monitoring encoder activity.
   {
@@ -973,7 +974,8 @@ void VideoSendStreamImpl::SignalEncoderActive() {
   LOG(LS_INFO) << "SignalEncoderActive, Encoder is active.";
   bitrate_allocator_->AddObserver(
       this, encoder_min_bitrate_bps_, encoder_max_bitrate_bps_,
-      max_padding_bitrate_, !config_->suspend_below_min_bitrate);
+      max_padding_bitrate_, !config_->suspend_below_min_bitrate,
+                                  config_->track_id);
 }
 
 void VideoSendStreamImpl::OnEncoderConfigurationChanged(
@@ -1015,7 +1017,8 @@ void VideoSendStreamImpl::OnEncoderConfigurationChanged(
     // limits.
     bitrate_allocator_->AddObserver(
         this, encoder_min_bitrate_bps_, encoder_max_bitrate_bps_,
-        max_padding_bitrate_, !config_->suspend_below_min_bitrate);
+        max_padding_bitrate_, !config_->suspend_below_min_bitrate,
+                                    config_->track_id);
   }
 }