Incrementally invalidate boxes with borders if possible

LayoutTests/fast/repaint/resize-child-within-overflow-expected.txt

 {
   "bounds": [800, 1000],
   "children": [
     {
       "bounds": [800, 1000],
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
-        [0, 0, 800, 1000]
+        [400, 0, 200, 1000]
       ]
     }
   ]
 }