Migrate svg layout tests to use slimming paint by default

LayoutTests/platform/mac/svg/custom/relative-sized-shadow-tree-content-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
         [209, 269, 200, 200],
         [209, 269, 200, 200],
         [109, 69, 300, 400],
         [59, 269, 150, 200],
         [59, 269, 50, 200],
         [59, 269, 50, 200],
         [59, 69, 150, 200],
         [59, 69, 150, 200],
         [59, 69, 150, 200],
         [59, 69, 150, 200],
         [59, 69, 150, 200],
         [59, 69, 150, 200],
         [8, 68, 402, 405],
         [8, 68, 102, 405]
+      ],
+      "paintInvalidationClients": [
+        "RootInlineBox",
+        "InlineBox",
+        "LayoutBlockFlow div id='contentBox'",
+        "LayoutSVGRoot svg",
+        "LayoutSVGRect rect id='targetRect'",
+        "LayoutSVGRect rect id='targetRect1'",
+        "LayoutSVGContainer use id='targetUse'",
+        "LayoutSVGRect rect id='targetRect1'",
+        "LayoutSVGContainer use",
+        "LayoutSVGRect rect id='targetRect'",
+        "LayoutSVGContainer use",
+        "LayoutSVGContainer g id='targetUse'",
+        "LayoutSVGRect rect id='targetRect1'"
       ]
     }
   ]
 }