Propagate probing cluster id to SendTimeHistory.

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 93d5244b67ba012b7fb87e8af6e2cd78fc568737..bf7065164a29f6ff161b823fc90b00324f992bbc 100644
--- a/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
+++ b/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
@@ -40,7 +40,7 @@ class RemoteEstimatorProxy : public RemoteBitrateEstimator {
   void IncomingPacket(int64_t arrival_time_ms,
                       size_t payload_size,
                       const RTPHeader& header,
-                      bool was_paced) override;
+                      int probe_cluster_id) override;
   void RemoveStream(uint32_t ssrc) override {}
   bool LatestEstimate(std::vector<unsigned int>* ssrcs,
                       unsigned int* bitrate_bps) const override;