tree ddb50a81eadadac05461d877f78f22782b5b233d
parent 8b7cfa16aa2f07a5cd41ed3c7e1ae975a2b8d1f2
author Henrik Boström <hbos@webrtc.org> 1591254737 +0200
committer Commit Bot <commit-bot@chromium.org> 1591261432 +0000

[Stats] Don't attempt to aggregate empty VideoSenderInfos.

This fixes a crash that could happen if substreams exist but there is
no kMedia substream yet. There was an assumption that we either had no
substreams or at least one kMedia substream, but this was not true.
The correct thing to do is to ignore substream stats that are not
associated with any kMedia substream, because we only produce
"outbound-rtp" stats objects for existing kMedia substreams.

A test is added to make sure no stats are returned. Prior to the fix,
this test would crash.

Bug: chromium:1090712
Change-Id: Ib1f8494a162542ae56bdd2df7618775a3473419b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176446
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31442}