Specify default values for optional parameters of type 'long' / 'unrestricted double' and let the bindings generator use WTF::Optional<> for the ones that do not have a default value.
Created attachment 277306 [details] Patch
Created attachment 277307 [details] Patch
Created attachment 277308 [details] Patch
Created attachment 277313 [details] Patch
Comment on attachment 277313 [details] Patch Clearing flags on attachment: 277313 Committed r200087: <http://trac.webkit.org/changeset/200087>
All reviewed patches have been landed. Closing bug.