Currently only the Mac port implements the majority of the methods in WebPreferences that are platform specific.
Created attachment 387560 [details]
Just checking the build especially on iOS.
Created attachment 387565 [details]
Moving around Apple code as well.
Comment on attachment 387565 [details]
Clearing flags on attachment: 387565
Committed r254489: <https://trac.webkit.org/changeset/254489>
All reviewed patches have been landed. Closing bug.