Revert of Remove audio/video distinction for probe packets.

webrtc/voice_engine/channel.cc

Index: webrtc/voice_engine/channel.cc
diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index 943a04572be088689cb655578001dd533703c0b7..d879fe87f32d55b9e62eed93ed302f15ce1db222 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -75,11 +75,13 @@
   // Implements TransportFeedbackObserver.
   void AddPacket(uint16_t sequence_number,
                  size_t length,
+                 bool was_paced,
                  int probe_cluster_id) override {
     RTC_DCHECK(pacer_thread_.CalledOnValidThread());
     rtc::CritScope lock(&crit_);
     if (feedback_observer_)
-      feedback_observer_->AddPacket(sequence_number, length, probe_cluster_id);
+      feedback_observer_->AddPacket(sequence_number, length, was_paced,
+                                    probe_cluster_id);
   }
   void OnTransportFeedback(const rtcp::TransportFeedback& feedback) override {
     RTC_DCHECK(network_thread_.CalledOnValidThread());