modernize terminology
Created attachment 412344 [details] patch
This is the reverse of the direction we normally go. Don't use "new" or "modern": rename the old to legacy, and use no modifier for new code.
The plan is to use modern/legacy in the integration layer code. The actual new layout code doesn't use any qualifiers.
Committed r268994: <https://trac.webkit.org/changeset/268994> All reviewed patches have been landed. Closing bug and clearing flags on attachment 412344 [details].
<rdar://problem/70692601>