Auto-rebaseline for r172545

LayoutTests/platform/win/fast/repaint/positioned-document-element-expected.txt

 Tests that the entire viewport is painted with a floated html element.
 
-(repaint rects
-  (rect 0 0 800 600)
-  (rect 0 0 800 52)
-  (rect 0 0 800 52)
-  (rect 108 16 784 20)
-  (rect 108 16 403 20)
-  (rect 511 16 381 20)
-  (rect 0 0 800 52)
-  (rect 100 100 419 52)
+(GraphicsLayer
+  (bounds 800.00 600.00)
+  (children 1
+    (GraphicsLayer
+      (bounds 800.00 600.00)
+      (contentsOpaque 1)
+      (drawsContent 1)
+      (repaint rects
+        (rect 0.00 0.00 800.00 600.00)
+        (rect 0.00 0.00 800.00 52.00)
+        (rect 0.00 0.00 800.00 52.00)
+        (rect 108.00 16.00 692.00 20.00)
+        (rect 108.00 16.00 403.00 20.00)
+        (rect 511.00 16.00 289.00 20.00)
+        (rect 0.00 0.00 800.00 52.00)
+        (rect 100.00 100.00 419.00 52.00)
+      )
+    )
+  )
 )