[Win] Remove unused GraphicsContext::shouldIncludeChildWindows() r278265 (Bug 226410) removed the last caller. It was added by r40366 (Bug 23623).
Created attachment 430443 [details] Patch
Comment on attachment 430443 [details] Patch r=me as long as the bots are happy
Comment on attachment 430443 [details] Patch Clearing flags on attachment: 430443 Committed r278416 (238441@main): <https://commits.webkit.org/238441@main>
All reviewed patches have been landed. Closing bug.
<rdar://problem/78832317>