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

third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/outline-containing-image-in-non-standard-mode-expected.txt

 {
   "layers": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutInline SPAN id='target'",
           "rect": [6, 6, 204, 58],
           "reason": "style change"
-        },
-        {
-          "object": "LayoutImage IMG",
-          "rect": [8, 8, 200, 50],
-          "reason": "forced by layout"
         }
       ]
     }
   ],
   "objectPaintInvalidations": [
     {
       "object": "LayoutBlockFlow BODY",
       "reason": "forced by layout"
     },
     {
       "object": "RootInlineBox",
       "reason": "forced by layout"
     },
     {
       "object": "LayoutInline SPAN id='target'",
       "reason": "style change"
     },
     {
       "object": "InlineFlowBox",
       "reason": "style change"
     },
     {
       "object": "LayoutImage IMG",
       "reason": "forced by layout"
     }
   ]
 }