Auto-rebaseline for r179857

LayoutTests/virtual/softwarecompositing/squashing/squashing-inside-preserve-3d-element-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "children": [
         {
           "3dRenderingContext": 1,
           "children": [
             {
               "position": [8, 8],
               "bounds": [100, 100],
               "contentsOpaque": true,
               "3dRenderingContext": 1,
               "drawsContent": true,
               "backgroundColor": "#D3D3D3"
             },
             {
               "position": [28, 28],
               "bounds": [100, 100],
               "drawsContent": true,
               "repaintRects": [
-                [0, 0, 100, 100],
                 [0, 0, 100, 100]
               ]
             }
           ]
         }
       ]
     }
   ]
 }