Handle OnRttUpdate in ReceiveStatisticsProxy.

Bug: webrtc:11490
Change-Id: Iba76f77ac1d73350810508f52293e4848f2f6f46
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174300
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31208}
diff --git a/video/receive_statistics_proxy2.cc b/video/receive_statistics_proxy2.cc
index 31a0dc1..b818eae 100644
--- a/video/receive_statistics_proxy2.cc
+++ b/video/receive_statistics_proxy2.cc
@@ -1023,11 +1023,7 @@
 
 void ReceiveStatisticsProxy::OnRttUpdate(int64_t avg_rtt_ms) {
   RTC_DCHECK_RUN_ON(&main_thread_);
-  // TODO(bugs.webrtc.org/11489): Now that this method is being called, as part
-  // of fixing 11490, we can uncomment the below line. However, since it will
-  // affect stats, that change will be landed as a separate CL.
-
-  // avg_rtt_ms_ = avg_rtt_ms;
+  avg_rtt_ms_ = avg_rtt_ms;
 }
 
 void ReceiveStatisticsProxy::DecoderThreadStarting() {