Adding packetsDiscarded to RTCReceivedRtpStreamStats.

Bug: webrtc:12532, webrtc:7065, webrtc:8199
Change-Id: I3ba62ec65e5660e98787f629aec3ee7a0889207a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/225261
Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Sam Zackrisson <saza@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Minyue Li <minyue@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34468}
diff --git a/api/neteq/neteq.h b/api/neteq/neteq.h
index ea7079e..81340f1 100644
--- a/api/neteq/neteq.h
+++ b/api/neteq/neteq.h
@@ -60,7 +60,7 @@
 // These metrics are never reset.
 struct NetEqLifetimeStatistics {
   // Stats below correspond to similarly-named fields in the WebRTC stats spec.
-  // https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamtrackstats
+  // https://w3c.github.io/webrtc-stats/#dom-rtcinboundrtpstreamstats
   uint64_t total_samples_received = 0;
   uint64_t concealed_samples = 0;
   uint64_t concealment_events = 0;