Add implementation for Object.getOwnPropertyNames() on HTMLDocument.
Created attachment 413322 [details] WIP Patch
Created attachment 413342 [details] Patch
Comment on attachment 413342 [details] Patch r=me
Committed r269481: <https://trac.webkit.org/changeset/269481> All reviewed patches have been landed. Closing bug and clearing flags on attachment 413342 [details].
<rdar://problem/71097312>