To reproduce: 1. Go to data:text/html,%3Cdiv%20style=%22overflow:scroll;%20height:100px;%22%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3E 2. Place the mouse cursor over the scrollable area 3. Scroll the mouse wheel The scrollable area doesn't scroll. But it does in WebKit1!
<rdar://problem/8481161>
Created attachment 68916 [details] Give mouse wheel events the right coordinates on Windows
Committed r68396: <http://trac.webkit.org/changeset/68396>