MediaSourceClientGStreamerMSE is a superfluous class that adds a layer of indirection and complexity to the GStreamer MSE codebase for no gain. This patch gets rid of it. This also gets rid of the friend access layer violations that MediaSourceClientGStreamerMSE relied upon. This patch is a refactor that doesn't introduce behavior changes and it's covered by existing tests.
Created attachment 403874 [details] Patch
Committed r264211: <https://trac.webkit.org/changeset/264211> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403874 [details].