The Web*Events should USE(LIBWPE) instead of PLATFORM(WPE).
Created attachment 355293 [details] Patch
Created attachment 355295 [details] Patch
Comment on attachment 355295 [details] Patch Clearing flags on attachment: 355295 Committed r238384: <https://trac.webkit.org/changeset/238384>
All reviewed patches have been landed. Closing bug.