Auto-rebaseline for r196973

LayoutTests/virtual/slimmingpaint/fast/repaint/body-background-image-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
+      "backgroundColor": "#FFFFFF",
       "repaintRects": [
         [8, 240, 784, 284],
-        [0, 0, 800, 600],
-        [0, 0, 800, 540]
+        [0, 0, 800, 600]
       ],
       "paintInvalidationClients": [
         "LayoutView #document",
-        "LayoutBlockFlow HTML",
         "LayoutBlockFlow BODY"
       ]
     }
   ]
 }