Use the system font by default in extra zoom mode
Created attachment 340385 [details] Patch
<rdar://problem/40230277>
Comment on attachment 340385 [details] Patch rs=me
Comment on attachment 340385 [details] Patch Clearing flags on attachment: 340385 Committed r231783: <https://trac.webkit.org/changeset/231783>
All reviewed patches have been landed. Closing bug.