Reland "Add hugeFramesSent GetStats metric"

This is a reland of f9f71b91ae073fdd2b89ff9df1204835aa3137eb
after the change in chromium tests.

Chromium change done here:
https://chromium-review.googlesource.com/c/chromium/src/+/950776

Original reviewed on: https://webrtc-review.googlesource.com/c/src/+/54420

No changes to the original patchset were done.

TBR=hta@webrtc.org,hbos@webrtc.org,sprang@webrtc.org,solenberg@webrtc.org

Bug: webrtc:8901
Change-Id: Ic88c3cb963dceea0426eb90519743e3c1a4533c1
Reviewed-on: https://webrtc-review.googlesource.com/60140
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22310}
diff --git a/pc/rtcstatscollector.cc b/pc/rtcstatscollector.cc
index 80e67c5..20cbc91 100644
--- a/pc/rtcstatscollector.cc
+++ b/pc/rtcstatscollector.cc
@@ -455,6 +455,7 @@
   // TODO(hbos): Will reduce this by frames dropped due to congestion control
   // when available. https://crbug.com/659137
   video_track_stats->frames_sent = video_sender_info.frames_encoded;
+  video_track_stats->huge_frames_sent = video_sender_info.huge_frames_sent;
   return video_track_stats;
 }