Continue porting CDM and video related types to the new serialization format
<rdar://problem/105681446>
Pull request: https://github.com/WebKit/WebKit/pull/10368
Committed 260676@main (85e62f3c9f8d): <https://commits.webkit.org/260676@main> Reviewed commits have been landed. Closing PR #10368 and removing active labels.