Only use paced packets for estimating bitrate probes.

webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc

Index: webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc b/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc
index 1c505ad835b4f172ba4702d9a657786f76b9684a..965586757de6e956fcd8bb2ea5f319f16856c2e7 100644
--- a/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc
+++ b/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp_play.cc
@@ -90,8 +90,7 @@ int main(int argc, char** argv) {
         packet_length = packet.original_length;
       }
       rbe->IncomingPacket(clock.TimeInMilliseconds(),
-                          packet_length - header.headerLength,
-                          header);
+                          packet_length - header.headerLength, header, true);
       ++packet_counter;
       if (!rtp_reader->NextPacket(&packet)) {
         break;