This is needed for downstream users of the impl, as we currently pull in Chromium specifics in the android_codec_factory_helper. Further, the downstream users should explicitly supply their own factories if they do not want to use the internal ones. Bug: None Change-Id: Ia7b01a66aadaba3d5accf44e5ca38e1a319e4e34 Reviewed-on: https://webrtc-review.googlesource.com/78420 Commit-Queue: Rasmus Brandt <brandtr@webrtc.org> Reviewed-by: Åsa Persson <asapersson@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23390}