1e06d885dc
Prepare for building without built-in software codecs. When passing null, inject the new type of factories but wrap them in the built-in software codecs outside the videoengine. Bug: webrtc:7925 Change-Id: I7408e6e46e6b9efdf346852954bf51a97e023b5c Reviewed-on: https://webrtc-review.googlesource.com/83729 Commit-Queue: Anders Carlsson <andersc@webrtc.org> Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23897}