Use LayoutBox::paintedOutputOfObjectHasNoEffectregardlessOfSize() for SVGRoot

third_party/WebKit/LayoutTests/platform/win/paint/invalidation/svg/js-late-gradient-and-object-creation-expected.txt

 {
   "layers": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutSVGContainer g id='content'",
           "rect": [0, 15, 759, 362],
           "reason": "became visible"
         },
         {
-          "object": "LayoutSVGRoot svg id='svg-root'",
-          "rect": [0, 15, 759, 362],
-          "reason": "became visible"
-        },
-        {
           "object": "LayoutSVGInlineText #text",
           "rect": [0, 247, 759, 130],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGText text",
           "rect": [0, 247, 759, 130],
           "reason": "layoutObject insertion"
         },
         {
@@ skipping 34 matching lines @@
     },
     {
       "object": "LayoutSVGResourceLinearGradient linearGradient id='strokeLinearGradient'",
       "reason": "layoutObject insertion"
     },
     {
       "object": "LayoutSVGGradientStop stop",
       "reason": "layoutObject insertion"
     },
     {
-      "object": "LayoutSVGRoot svg id='svg-root'",
-      "reason": "became visible"
-    },
-    {
       "object": "LayoutSVGContainer g id='content'",
       "reason": "became visible"
     },
     {
       "object": "LayoutSVGText text",
       "reason": "layoutObject insertion"
     },
     {
       "object": "RootInlineBox",
       "reason": "layoutObject insertion"
@@ skipping 34 matching lines @@
       "object": "LayoutSVGInlineText #text",
       "reason": "layoutObject insertion"
     },
     {
       "object": "InlineTextBox 'Gradient on fill/stroke'",
       "reason": "layoutObject insertion"
     }
   ]
 }