Resync FileAPI tests from upstream WPT.
Created attachment 431588 [details] Patch
Tools/Scripts/svn-apply failed to apply attachment 431588 [details] to trunk. Please resolve the conflicts and upload a new patch.
Created attachment 431616 [details] Patch
Committed r278962 (238889@main): <https://commits.webkit.org/238889@main>
<rdar://problem/79419665>