Auto-rebaseline for r176651

LayoutTests/fast/borders/overflow-hidden-border-radius-force-backing-store-expected.txt

-(GraphicsLayer
-  (bounds 800.00 600.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 800.00 600.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 1
-        (GraphicsLayer
-          (position 50.00 50.00)
-          (bounds 300.00 300.00)
-          (drawsContent 1)
-          (children 1
-            (GraphicsLayer
-              (bounds 300.00 300.00)
-              (children 1
-                (GraphicsLayer
-                  (bounds 285.00 300.00)
-                  (children 1
-                    (GraphicsLayer
-                      (bounds 285.00 1000.00)
-                    )
-                  )
-                )
-              )
-            )
-          )
-        )
-      )
-    )
-  )
-)
+{
+  "bounds": [800, 600],
+  "children": [
+    {
+      "bounds": [800, 600],
+      "contentsOpaque": true,
+      "drawsContent": true,
+      "children": [
+        {
+          "position": [50, 50],
+          "bounds": [300, 300],
+          "drawsContent": true,
+          "children": [
+            {
+              "bounds": [300, 300],
+              "children": [
+                {
+                  "bounds": [285, 300],
+                  "children": [
+                    {
+                      "bounds": [285, 1000]
+                    }
+                  ]
+                }
+              ]
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}