document().printing() vs shouldUsePrintingLayout() subframes don't use printing layout.
<rdar://problem/43659749>
Created attachment 350265 [details] Patch
Comment on attachment 350265 [details] Patch Clearing flags on attachment: 350265 Committed r236288: <https://trac.webkit.org/changeset/236288>
All reviewed patches have been landed. Closing bug.