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

Source/core/dom/ContainerNode.h

Index: Source/core/dom/ContainerNode.h
diff --git a/Source/core/dom/ContainerNode.h b/Source/core/dom/ContainerNode.h
index c43a52b6808ed8fe4553fae77cfed418b3144be5..27a0e6eaeacffecbd7d90e3ca9de34010499a32e 100644
--- a/Source/core/dom/ContainerNode.h
+++ b/Source/core/dom/ContainerNode.h
@@ -84,7 +84,7 @@ public:
     PassRefPtrWillBeRawPtr<Element> querySelector(const AtomicString& selectors, ExceptionState&);
     PassRefPtrWillBeRawPtr<StaticNodeList> querySelectorAll(const AtomicString& selectors, ExceptionState&);
 
-    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& = ASSERT_NO_EXCEPTION);
     void appendChild(PassRefPtrWillBeRawPtr<Node> newChild, ExceptionState& = ASSERT_NO_EXCEPTION);
@@ -220,6 +220,8 @@ private:
     bool getUpperLeftCorner(FloatPoint&) const;
     bool getLowerRightCorner(FloatPoint&) const;
 
+    Node* sameNode(Node* child);
+
     RawPtrWillBeMember<Node> m_firstChild;
     RawPtrWillBeMember<Node> m_lastChild;
 };