Update histogram "WebRTC.Video.OnewayDelayInMs" to use the estimated one-way delay.

webrtc/video/end_to_end_tests.cc

Index: webrtc/video/end_to_end_tests.cc
diff --git a/webrtc/video/end_to_end_tests.cc b/webrtc/video/end_to_end_tests.cc
index 28d371a5af5c72ddbb6dcf096f014828b00ac99f..5197243b36bb7e296a10f985eee63bf4993f44e6 100644
--- a/webrtc/video/end_to_end_tests.cc
+++ b/webrtc/video/end_to_end_tests.cc
@@ -2139,6 +2139,8 @@ void EndToEndTest::VerifyHistogramStats(bool use_rtx,
         (*receive_configs)[0].rtp.rtx[kFakeVideoSendPayloadType].payload_type =
             kSendRtxPayloadType;
       }
+      // RTT needed for RemoteNtpTimeEstimator for the receive stream.
+      (*receive_configs)[0].rtp.rtcp_xr.receiver_reference_time_report = true;
       encoder_config->content_type =
           screenshare_ ? VideoEncoderConfig::ContentType::kScreen
                        : VideoEncoderConfig::ContentType::kRealtimeVideo;