There is an important pending patch (bugs.webkit.org/show_bug.cgi?id=17442 ) which corrects some bugs I created when mixing and matching the original Cairo and new CoreGraphics internal GraphicsContext representations. This basically prevents some graphic image effects (rotation of images, etc.) from working properly.
I have another set of patches that need to be landed as well that re- enable the Windows Theme support and provides a rudimentary scroll bar. I hope to get that posted today or tomorrow.