Prevent BWE rampdowns without new loss reports.
Before this change, UpdateEstimate would repeatedly decrease bitrate
even though there's no fresh corresponding RTCP loss report, triggering
multiple reactions to a single indication of high packet loss.
BUG=webrtc:5101
R=stefan@webrtc.org
Review URL: https://codereview.webrtc.org/1417723005
Cr-Original-Commit-Position: refs/heads/master@{#10374}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: b7edb88ae2bb65b3b7ce3be31dd708470baa3575
3 files changed
