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

third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt

 {
   "layers": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow DIV id='inner-target'",
           "rect": [8, 187, 784, 20],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutBlockFlow DIV id='inner-target'",
           "rect": [18, 18, 284, 20],
           "reason": "layoutObject removal"
         },
         {
           "object": "LayoutText #text",
           "rect": [18, 18, 22, 19],
           "reason": "layoutObject removal"
-        },
-        {
-          "object": "LayoutText #text",
-          "rect": [8, 187, 22, 19],
-          "reason": "layoutObject insertion"
         }
       ]
     }
   ],
   "objectPaintInvalidations": [
     {
       "object": "LayoutBlockFlow DIV id='inner-target'",
       "reason": "layoutObject insertion"
     },
     {
@@ skipping 12 matching lines @@
       "object": "LayoutText #text",
       "reason": "layoutObject removal"
     },
     {
       "object": "LayoutBlockFlow DIV id='inner-target'",
       "reason": "layoutObject removal"
     }
   ]
 }