For consistency with <video>, I think <model> should support a src="" attribute.
And let's handle <source type> at the same time.
<rdar://problem/103056552>
Pull request: https://github.com/WebKit/WebKit/pull/7245
Committed 257518@main (7d493da919b5): <https://commits.webkit.org/257518@main> Reviewed commits have been landed. Closing PR #7245 and removing active labels.