Re: [uievents-tests] Add test for MouseEvent.toElement & MouseEvent.fromElement (#4408)

@dtapuska Based on http://jsbin.com/lanoregese/1/edit?html,output 
* In Edge, `pointerenter/pointerleave/pointerover/pointerout` always have `null` for their `fromElement/toElement`
* In Chrome, this pair of properties is populated for those 4 event types, but the values seem to be swapped (compared to `mouse*` events) in the `pointerleave/pointerout` case.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4408#issuecomment-271921770

Received on Wednesday, 11 January 2017 16:45:30 UTC