[webkit-reviews] review requested: [Bug 50370] backward mouse wheeling does not work when scroll position is below 0 : [Attachment 75596] patch w/ layout test

[bugzilla-daemon at webkit.org]

Xiaomei Ji <xji at chromium.org> has asked  for review:
Bug 50370: backward mouse wheeling does not work when scroll position is below
0
https://bugs.webkit.org/show_bug.cgi?id=50370

Attachment 75596: patch w/ layout test
https://bugs.webkit.org/attachment.cgi?id=75596&action=review

------- Additional Comments from Xiaomei Ji <xji at chromium.org>
Something is wrong with Mac port (maybe mouseScrollByX in
EventSendingController.mm under DRT): backward scrolling below 0 works fine
manually, but the tests fails. Need further investigation.