We want clients to be able to build their own factories around these codecs. Bug: webrtc:7925 Change-Id: Ia8f62d5d85e63ac6e3eb402c5996d8b986625615 Reviewed-on: https://webrtc-review.googlesource.com/c/109529 Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Commit-Queue: Jonathan Yu <yujo@chromium.org> Cr-Commit-Position: refs/heads/master@{#25543}