Currently TrackBuffer is just a struct within SourceBufferPrivate, it makes sense to extract TrackBuffer as its own platform agnostic class for use in future media players.
Pull request: https://github.com/WebKit/WebKit/pull/1297
<rdar://problem/94454724>
Committed r295368 (251376@main): <https://commits.webkit.org/251376@main> Reviewed commits have been landed. Closing PR #1297 and removing active labels.