[csswg-drafts] [cssom-view] Screen#availLeft/availTop

foolip has just created a new issue for https://github.com/w3c/csswg-drafts:

== [cssom-view] Screen#availLeft/availTop ==
https://drafts.csswg.org/cssom-view/#the-screen-interface

`availWidth` and `availHeight` are in the spec, but not `availLeft` or `availTop`.

Those two attributes are in Chromium, Gecko and WebKit, but not EdgeHTML.

Use counters:
https://www.chromestatus.com/metrics/feature/timeline/popularity/786
https://www.chromestatus.com/metrics/feature/timeline/popularity/787

There are 24,256 hits in httparchive for 'screen.availLeft', enough that I didn't try looking at how they're used.

@zcorpan 

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/1090 using your GitHub account