RenderBox::computeRectForRepaint() is broken for elements that have both fixed position and a transform.
Created attachment 53406 [details] Patch
http://trac.webkit.org/changeset/57633
<cherry-pick-for-backport: r57633>
Revision r57633 cherry-picked into qtwebkit-2.0 with commit 829895d4e2c6557956b6db5c6caf006a57ec3f43