Dan Robertson

|Test| Blink | WebKit | Gecko | |----|------|--------|--------| |Wheel events are grouped and are not sent to a child element|:white_check_mark:|:white_check_mark:|:x:| |Wheel events are not bound to a scroll frame|:white_check_mark:|:white_check_mark:|:white_check_mark:| |Wheel...

> I also wanted to add a test for a moved element, but that turns out to be a bit more complicated and the tests get super flaky, so I'm...

Added `dom/events/scrolling/wheel-event-groups-target-elements.html` which ensures the text is not the event target for the wheel event group. Blink handles this correctly, but I'm currently unable to test on WebKit. This is...

CC: @smaug----

The firefox failure is expected until the fix for [bug 1168182](https://bugzilla.mozilla.org/show_bug.cgi?id=1168182) lands ([D163484](https://phabricator.services.mozilla.com/D163484)).

> This bug has been fixed two months ago. I've re-triggered the tests so hopefully they should all pass now. Thanks for re-triggering the tests! Just re-ran these tests locally...

Added `dom/events/scrolling/wheel-event-groups-multiple-action-chains.html`. It is largely focused on testing that the webdriver functions like we'd hope. Tested on both chrome and mozilla-central (fails on current m-c and pasess with [bug 1821733](https://bugzilla.mozilla.org/show_bug.cgi?id=1821733)...

> @dlrobertson thanks for adding the test! It would be good if you could retrigger the CI checks (at least those for Firefox) once the fix from [bug 1821733](https://bugzilla.mozilla.org/show_bug.cgi?id=1821733) made...

@smaug---- or @masayuki-nakano PTAL, I'd like to get more testing coverage for this, since this behavior is now the default in firefox (riding the trains with [bug 1823700)](https://bugzilla.mozilla.org/show_bug.cgi?id=1823700)). If this...

> And sorry being late here. Getting the review through bugzilla would be faster in my case, even for public wpts (not only because the reviewing tools we use are...