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

LayoutTests/platform/linux/svg/custom/text-dom-removal-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": [
         [50, 110, 151, 19],
         [50, 110, 151, 19],
         [0, 0, 201, 129],
         [0, 0, 20, 20]
       ],
       "paintInvalidationClients": [
         "LayoutSVGRect rect",
         "InlineTextBox ''",
         "LayoutSVGInlineText #text",
         "RootInlineBox",
         "LayoutSVGText text",
         "LayoutSVGContainer g id='objectsToRemove'"
       ]
     }
   ]
 }