Align Document.elementFromPoint() with the CSSOM specification: - https://drafts.csswg.org/cssom-view/#extensions-to-the-document-interface parameters should be mandatory and of type double. The parameters are mandatory in both Firefox and Chrome already.
Created attachment 303921 [details] Patch
Comment on attachment 303921 [details] Patch Clearing flags on attachment: 303921 Committed r213646: <http://trac.webkit.org/changeset/213646>
All reviewed patches have been landed. Closing bug.