window.innerScreenX and window.innerScreenY

There is currently no good way of translation a position in a browser to a
position on the screen. Our particular need is translating a gaze-position
(which we have in screen coordinates from our eyetracking hardware).

It is possible in Firefox, using the proprietary
mozInnerScreenX/mozInnerScreenY,
but not in general.

One of the comments in https://bugs.chromium.org/p/
chromium/issues/detail?id=151983 seems to indicate that the correct course
of action is to raise the issue here, so I will just post this and see
where it leads.

-- 
/Jan Norden