It would be desirable to have bots and developers at least build the gamepad support code, which will ensure that it does not bitrot and issues like bug #217226 don't happen again.
Created attachment 410890 [details] Patch
The build will fail while bug #217226 is not solved.
Committed r268389: <https://trac.webkit.org/changeset/268389> All reviewed patches have been landed. Closing bug and clearing flags on attachment 410890 [details].