LayoutTests\editing\deleting\4866671.html is a crash test and does not require a pixel test. It should be using a dumpAsText test instead.
Created attachment 31005 [details] This is a patch to convert LayoutTests\editing\deleting\4866671.html to a dumpAsText test. This patch deletes files in platform/mac and platform/qt and adds the expected result in LayoutTests\editing\deleting\.
Comment on attachment 31005 [details] This is a patch to convert LayoutTests\editing\deleting\4866671.html to a dumpAsText test. No need to mark a Requestee. This looks fine. r=me.
Landed in @rr44543