Don't invalidate rect if it's covered by fully invalidated parent's visual rect

third_party/WebKit/LayoutTests/paint/invalidation/svg/inner-svg-change-viewPort-relative-expected.txt

+{
+  "layers": [
+    {
+      "name": "LayoutView #document",
+      "bounds": [800, 600],
+      "contentsOpaque": true,
+      "drawsContent": true,
+      "paintInvalidations": [
+        {
+          "object": "LayoutSVGViewportContainer svg id='inner'",
+          "rect": [0, 0, 200, 200],
+          "reason": "full"
+        }
+      ]
+    }
+  ],
+  "objectPaintInvalidations": [
+    {
+      "object": "LayoutSVGViewportContainer svg id='inner'",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutSVGRect rect",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutSVGRect rect",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutSVGText text",
+      "reason": "full"
+    },
+    {
+      "object": "RootInlineBox",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutSVGInlineText #text",
+      "reason": "forced by layout"
+    },
+    {
+      "object": "InlineTextBox 'right-aligned text'",
+      "reason": "forced by layout"
+    },
+    {
+      "object": "LayoutSVGContainer use",
+      "reason": "full"
+    },
+    {
+      "object": "LayoutSVGPath polygon id='triangle'",
+      "reason": "bounds change"
+    }
+  ]
+}
+