bool textDirection(WritingDirection&) is a little clunky.
A more modern idiom for these kinds of methods is to return an Optional<T> instead, where nullopt corresponds to a false return value.
Created attachment 362089 [details]
Comment on attachment 362089 [details]
Clearing flags on attachment: 362089
Committed r241588: <https://trac.webkit.org/changeset/241588>
All reviewed patches have been landed. Closing bug.