Danil Chapovalov 4553f45d2a Add AV1 to default video encoder factory
while checking for software supported codecs avoid creating encoder
factory to avoid linking av1 encoder and libaom.

Bug: webrtc:11404
Change-Id: I32771696efb59d98ba08592a20eb691b56622deb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172625
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30973}
2020-04-02 10:13:22 +00:00
..
2020-03-31 19:58:15 +00:00