Amount of scrolling is bigger than movement of touch when touch events are enabled and device pixel ratio is 2. Amount of scrolling should be same with movement of touch.
Created attachment 221622 [details] Patch
Created attachment 221623 [details] Patch
Created attachment 221625 [details] Patch
Created attachment 221627 [details] Patch
Comment on attachment 221627 [details] Patch rs=me
Comment on attachment 221627 [details] Patch Clearing flags on attachment: 221627 Committed r162386: <http://trac.webkit.org/changeset/162386>
All reviewed patches have been landed. Closing bug.