[webkit-reviews] review requested: [Bug 109560] Implement coordinated scrollbar for subframes and overflow:scroll : [Attachment 189656] Patch

[bugzilla-daemon at webkit.org]

Tien-Ren Chen <trchen at chromium.org> has asked  for review:
Bug 109560: Implement coordinated scrollbar for subframes and overflow:scroll
https://bugs.webkit.org/show_bug.cgi?id=109560

Attachment 189656: Patch
https://bugs.webkit.org/attachment.cgi?id=189656&action=review