Looks like we need to start using the true WheelEvent constructor on Chrome when running dart2js.

Set owner to @blois.

Added this to the Later milestone.

After updating to chrome31 this is also failing on chrome win/mac

Removed Area-HTML label.
Added Area-Library, Library-Html labels.

Removed this from the Later milestone.
Added Oldschool-Milestone-Later label.

Removed Oldschool-Milestone-Later label.

On Chrome we call initWebKitWheelEvent which has been removed. It looks like Firefox also supports WheelEvent now, but the code for this is a messy bunch of platform-specific cases which need to be checked carefully.

Removed the owner.
Removed Priority-Unassigned label.
Added Priority-Medium, Accepted labels.
Changed the title to: "Switch to WheelEvent constructor rather than document.createEvent".

I seem to be fixing this in the context of another bug.

Set owner to @alan-knight.

@alan-knight - did this end up getting fixed?

It looks like it to me. At least I see this for WheelEvent in html_dart2js.

return JS('WheelEvent', 'new WheelEvent(#, #)', type,
        convertDartToNative_Dictionary(options));
``