eventSender.monitorWheelEvents() will need to become async, so in preparation (and also to fix scrolling tests with UI-side compositing), hide calls to eventSender.monitorWheelEvents() inside a UIHelper function, which also waits for a rendering update.
<rdar://problem/103857097>
Pull request: https://github.com/WebKit/WebKit/pull/8178
Committed 258483@main (117ebe14e9c2): <https://commits.webkit.org/258483@main> Reviewed commits have been landed. Closing PR #8178 and removing active labels.
*** Bug 249609 has been marked as a duplicate of this bug. ***