flow/flow-root: r276293 implemented those 2 keywords in CSSPropertyParser.cpp (consumeDisplay function). Other updates needed too.
Created attachment 447906 [details] Patch
Created attachment 447907 [details] Patch
Created attachment 447908 [details] Patch
Committed r287415 (245550@main): <https://commits.webkit.org/245550@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 447908 [details].