Behavior of [[GetOwnProperty]] for cross-origin windows is not spec-compliant. We should be able to return frames by name, even if their name conflict with the name of a same-origin window property (e.g. "close").
Created attachment 385558 [details] WIP Patch
Created attachment 385561 [details] Patch
Comment on attachment 385561 [details] Patch Clearing flags on attachment: 385561 Committed r253483: <https://trac.webkit.org/changeset/253483>
All reviewed patches have been landed. Closing bug.
<rdar://problem/57915284>