Revert of Remove audio/video distinction for probe packets.

webrtc/modules/congestion_controller/congestion_controller.cc

Index: webrtc/modules/congestion_controller/congestion_controller.cc
diff --git a/webrtc/modules/congestion_controller/congestion_controller.cc b/webrtc/modules/congestion_controller/congestion_controller.cc
index a585e339cb9520d9d88cc73db0853572f98f41fb..593f4a50d679318d58eb7f0d208ae27110e5d5a6 100644
--- a/webrtc/modules/congestion_controller/congestion_controller.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller.cc
@@ -48,10 +48,11 @@
 
   void IncomingPacket(int64_t arrival_time_ms,
                       size_t payload_size,
-                      const RTPHeader& header) override {
+                      const RTPHeader& header,
+                      bool was_paced) override {
     CriticalSectionScoped cs(crit_sect_.get());
     PickEstimatorFromHeader(header);
-    rbe_->IncomingPacket(arrival_time_ms, payload_size, header);
+    rbe_->IncomingPacket(arrival_time_ms, payload_size, header, was_paced);
   }
 
   void Process() override {