candidate keepalive intervals.
StunStats for a STUN candidate cannot be updated after the initial report
in the stats collector. This is caused by the early return of cached
candidate reports for future queries after the initial report creation.
The STUN keepalive interval cannot be configured for UDPPort because of
incorrect type screening, where only StunPort was supported.
TBR=pthatcher@webrtc.org
Bug: webrtc:8951
Change-Id: I0c9c414f43e6327985be6e541e17b5d6f248a79d
Reviewed-on: https://webrtc-review.googlesource.com/58560
Commit-Queue: Qingsi Wang <qingsi@google.com>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22278}