ENABLE_LEGACY_CSS_VENDOR_PREFIXES and RuntimeEnabledFeatures::legacyCSSVendorPrefixesEnabled() don't do anything
Created attachment 411592 [details] Patch
Committed r268599: <https://trac.webkit.org/changeset/268599> All reviewed patches have been landed. Closing bug and clearing flags on attachment 411592 [details].
<rdar://problem/70385493>