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

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 25d4bfeddc71f5eb1f27bfa574eac9c872386a53..8c0cf09a819b53743334de10b852cd2a9e0433e4 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -464,12 +464,13 @@ Node* Node::pseudoAwareLastChild() const
     return lastChild();
 }
 
-void Node::insertBefore(PassRefPtrWillBeRawPtr<Node> newChild, Node* refChild, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<Node> Node::insertBefore(PassRefPtrWillBeRawPtr<Node> newChild, Node* refChild, ExceptionState& exceptionState)
 {
     if (isContainerNode())
-        toContainerNode(this)->insertBefore(newChild, refChild, exceptionState);
-    else
-        exceptionState.throwDOMException(HierarchyRequestError, "This node type does not support this method.");
+        return toContainerNode(this)->insertBefore(newChild, refChild, exceptionState);
+
+    exceptionState.throwDOMException(HierarchyRequestError, "This node type does not support this method.");
+    return nullptr;
 }
 
 void Node::replaceChild(PassRefPtrWillBeRawPtr<Node> newChild, Node* oldChild, ExceptionState& exceptionState)
@@ -488,12 +489,13 @@ void Node::removeChild(Node* oldChild, ExceptionState& exceptionState)
         exceptionState.throwDOMException(NotFoundError, "This node type does not support this method.");
 }
 
-void Node::appendChild(PassRefPtrWillBeRawPtr<Node> newChild, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<Node> Node::appendChild(PassRefPtrWillBeRawPtr<Node> newChild, ExceptionState& exceptionState)
 {
     if (isContainerNode())
-        toContainerNode(this)->appendChild(newChild, exceptionState);
-    else
-        exceptionState.throwDOMException(HierarchyRequestError, "This node type does not support this method.");
+        return toContainerNode(this)->appendChild(newChild, exceptionState);
+
+    exceptionState.throwDOMException(HierarchyRequestError, "This node type does not support this method.");
+    return nullptr;
 }
 
 void Node::remove(ExceptionState& exceptionState)