We already supporting having both -expected.html and -expected-mismatch.html in the tree, so the importer just needs to import them. (Originally part of bug 235038)
<rdar://problem/109411753>
Pull request: https://github.com/WebKit/WebKit/pull/13930
Committed 264144@main (ab015861180e): <https://commits.webkit.org/264144@main> Reviewed commits have been landed. Closing PR #13930 and removing active labels.