Move repaint tests (except for svg/) to paint/invalidation

third_party/WebKit/LayoutTests/paint/invalidation/overflow-clip-subtree-layout-expected.txt

 {
   "name": "Content Root Layer",
   "bounds": [800, 600],
   "children": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true
     }
   ],
   "objectPaintInvalidations": [
     {
       "object": "LayoutBlockFlow DIV",
       "reason": "layoutObject insertion"
     }
   ]
 }