Introduce Layout*::adjustVisualRectForRasterEffects and use it for SVG hairlines.

third_party/WebKit/LayoutTests/paint/invalidation/svg/js-update-container-expected.txt

 {
   "layers": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutSVGContainer g id='group'",
           "rect": [0, 0, 76, 76],
           "reason": "full"
         },
         {
           "object": "LayoutSVGRect rect",
           "rect": [0, 0, 76, 76],
           "reason": "style change"
         },
         {
           "object": "LayoutSVGRoot svg",
           "rect": [0, 40, 76, 36],
           "reason": "incremental"
         },
         {
+          "object": "LayoutSVGRect rect",
+          "rect": [-2, -2, 44, 44],
+          "reason": "style change"
+        },
+        {
           "object": "LayoutSVGRoot svg",
           "rect": [40, 0, 36, 76],
           "reason": "incremental"
         }
       ]
     }
   ],
   "objectPaintInvalidations": [
     {
       "object": "LayoutSVGRoot svg",
       "reason": "incremental"
     },
     {
       "object": "LayoutSVGContainer g id='group'",
       "reason": "full"
     },
     {
       "object": "LayoutSVGRect rect",
       "reason": "style change"
     }
   ]
 }