Revert of Calculate paint invalidation rect for scrollbars

third_party/WebKit/LayoutTests/platform/win/fast/repaint/overflow-auto-in-overflow-auto-scrolled-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
         [762, 8, 15, 300],
         [8, 8, 769, 300],
         [8, 8, 300, 300],
         [8, 8, 300, 300]
       ],
       "paintInvalidationClients": [
+        "VerticalScrollbar",
         "LayoutBlockFlow DIV id='innerDiv'",
-        "VerticalScrollbar",
         "LayoutBlockFlow DIV",
         "LayoutBlockFlow DIV"
       ]
     }
   ]
 }