00c7ecf625
In order to be able to detect and measure context around candidate pair changes. Bug: webrtc:10419 Change-Id: Iab0d7e7c80d925d1aa44617fc35975fdc6bbc6b9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/147340 Commit-Queue: Alex Drake <alexdrake@google.com> Reviewed-by: Steve Anton <steveanton@webrtc.org> Reviewed-by: Qingsi Wang <qingsi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28779}