Clean up type parameter for Event idl files, there is no need to pass "undefined" default value.
Created attachment 409777 [details] Patch
Created attachment 409787 [details] Patch
Tools/Scripts/svn-apply failed to apply attachment 409787 [details] to trunk. Please resolve the conflicts and upload a new patch.
Created attachment 409819 [details] Patch
Committed r267652: <https://trac.webkit.org/changeset/267652> All reviewed patches have been landed. Closing bug and clearing flags on attachment 409819 [details].
<rdar://problem/69647655>