Defined as time between freezes (nothing rendered for 150 ms).
Bug: webrtc:8861
Change-Id: I56eae3beb7278b6d1894a0593ae3092c9f3cb1cc
Reviewed-on: https://webrtc-review.googlesource.com/49780
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Commit-Queue: Stefan Holmer <stefan@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21970}