Node.insertBefore and Node.appendChild do not use custom binding anymore

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index d96e03c890fdb84ef99268e100d111022ae196ac..f7665752582efa2b2b473329f5f013636b7225c0 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -195,7 +195,7 @@ public:
 
     // These should all actually return a node, but this is only important for language bindings,
     // which will already know and hold a ref on the right node to return.
-    void insertBefore(PassRefPtrWillBeRawPtr<Node> newChild, Node* refChild, ExceptionState& = ASSERT_NO_EXCEPTION);
+    PassRefPtrWillBeRawPtr<Node> insertBefore(PassRefPtrWillBeRawPtr<Node> newChild, Node* refChild, ExceptionState& = ASSERT_NO_EXCEPTION);
     void replaceChild(PassRefPtrWillBeRawPtr<Node> newChild, Node* oldChild, ExceptionState& = ASSERT_NO_EXCEPTION);
     void removeChild(Node* child, ExceptionState&);
     void appendChild(PassRefPtrWillBeRawPtr<Node> newChild, ExceptionState& = ASSERT_NO_EXCEPTION);