[webkit-reviews] review requested: [Bug 50370] backward mouse wheeling does not work when scroll position is below 0 : [Attachment 75744] 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 75744: patch w/ layout test
https://bugs.webkit.org/attachment.cgi?id=75744&action=review

------- Additional Comments from Xiaomei Ji <xji at chromium.org>
Looks like you have to do "eventSender.mouseMoveTo()" before
"eventSender.continuousMouseScrollBy()" to make the mouseScrollBy() work in Mac
port. (mouseScrollByX in EventSendingController.mm needs lastMousePosition).