Move the FontCascadeCache to a separate file
Created attachment 446293 [details] Patch
Created attachment 446294 [details] Patch with dependencies for EWS
<rdar://problem/86506031>
Created attachment 461020 [details] Patch
Created attachment 461025 [details] Patch
Committed 252633@main (3c15ae3f06ea): <https://commits.webkit.org/252633@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 461025 [details].