Deprecate Element.offsetParent/offsetTop/offsetLeft/offsetWidth/offsetHeight

LayoutTests/svg/custom/js-repaint-rect-on-path-with-stroke-expected.txt

+CONSOLE WARNING: 'Element.offsetTop' is deprecated and will be removed in M47, around Novemver 2015. The offset* attributes are only standardized and widely supported for HTML elements
 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
         [200, 50, 100, 50],
         [174, 30, 126, 90],
         [50, 50, 100, 50],
         [50, 30, 126, 90]
       ],
       "paintInvalidationClients": [
         "LayoutSVGRoot svg",
         "LayoutSVGPath path id='path'"
       ]
     }
   ]
 }