The SVG WG decided to provide constants for the new blend modes for feBlend in SVG DOM. https://drafts.fxtf.org/filter-effects-1/#InterfaceSVGFEBlendElement
Created attachment 340251 [details] Patch
Created attachment 340406 [details] Patch for landing
Comment on attachment 340406 [details] Patch for landing Clearing flags on attachment: 340406 Committed r231799: <https://trac.webkit.org/changeset/231799>
All reviewed patches have been landed. Closing bug.
<rdar://problem/40254962>