Revert of Remove audio/video distinction for probe packets.

webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h

Index: webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
diff --git a/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h b/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
index 66373e29778937dd5d9ee78b144ff0c0bfb7c5ba..93d5244b67ba012b7fb87e8af6e2cd78fc568737 100644
--- a/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
+++ b/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
@@ -39,7 +39,8 @@
       const std::vector<PacketInfo>& packet_feedback_vector) override;
   void IncomingPacket(int64_t arrival_time_ms,
                       size_t payload_size,
-                      const RTPHeader& header) override;
+                      const RTPHeader& header,
+                      bool was_paced) override;
   void RemoveStream(uint32_t ssrc) override {}
   bool LatestEstimate(std::vector<unsigned int>* ssrcs,
                       unsigned int* bitrate_bps) const override;