72a43a1d2c
STUN candidates use STUN binding requests to keep NAT bindings open. Related stats including packet loss and RTT can be now collected via the legacy GetStats in PeerConnection. Bug: None Change-Id: I7b0eee1ccb07eb670a32ee303c9590047b25f31c Reviewed-on: https://webrtc-review.googlesource.com/54100 Commit-Queue: Qingsi Wang <qingsi@google.com> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22113}