Revert of Remove audio/video distinction for probe packets.

webrtc/modules/rtp_rtcp/source/rtp_sender.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_sender.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_sender.cc b/webrtc/modules/rtp_rtcp/source/rtp_sender.cc
index 9b6b72ae1f10f0886fb4a154719ec4070425460a..fe0e49f79e6a2df6194a307095fe8c40beb49062 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_sender.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_sender.cc
@@ -719,7 +719,7 @@
                                         length, rtp_header)) {
         if (transport_feedback_observer_)
           transport_feedback_observer_->AddPacket(options.packet_id, length,
-                                                  probe_cluster_id);
+                                                  true, probe_cluster_id);
       }
     }
 
@@ -980,7 +980,7 @@
     if (UpdateTransportSequenceNumber(options.packet_id, buffer_to_send_ptr,
                                       length, rtp_header)) {
       if (transport_feedback_observer_)
-        transport_feedback_observer_->AddPacket(options.packet_id, length,
+        transport_feedback_observer_->AddPacket(options.packet_id, length, true,
                                                 probe_cluster_id);
     }
   }
@@ -1111,7 +1111,7 @@
     if (UpdateTransportSequenceNumber(options.packet_id, buffer, length,
                                       rtp_header)) {
       if (transport_feedback_observer_)
-        transport_feedback_observer_->AddPacket(options.packet_id, length,
+        transport_feedback_observer_->AddPacket(options.packet_id, length, true,
                                                 PacketInfo::kNotAProbe);
     }
   }