2cdbb969f0
This is in preparation for adding a portal / pipewire backend. This just renames one class and moved the code to different files. There are no changes to the implementation. Bug: webrtc:13177 Change-Id: Iae101fcabafdb6cddd4d82adbb26219e4b37557f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261680 Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Reviewed-by: Per Kjellander <perkj@webrtc.org> Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36848}