diff --git a/editor/libeditor/DeleteNodeTransaction.cpp b/editor/libeditor/DeleteNodeTransaction.cpp
index 3692745017d5..9c9442f9353c 100644
--- a/editor/libeditor/DeleteNodeTransaction.cpp
+++ b/editor/libeditor/DeleteNodeTransaction.cpp
@@ -66,7 +66,7 @@ DeleteNodeTransaction::DoTransaction()
   // *before* we do the action, unlike some of the other RangeItem update
   // methods.
   if (mRangeUpdater) {
-    mRangeUpdater->SelAdjDeleteNode(mNodeToDelete->AsDOMNode());
+    mRangeUpdater->SelAdjDeleteNode(mNodeToDelete);
   }
 
   ErrorResult error;
@@ -96,7 +96,7 @@ DeleteNodeTransaction::RedoTransaction()
   }
 
   if (mRangeUpdater) {
-    mRangeUpdater->SelAdjDeleteNode(mNodeToDelete->AsDOMNode());
+    mRangeUpdater->SelAdjDeleteNode(mNodeToDelete);
   }
 
   ErrorResult error;
diff --git a/editor/libeditor/EditorBase.cpp b/editor/libeditor/EditorBase.cpp
index fe39df84041a..642a66d761f2 100644
--- a/editor/libeditor/EditorBase.cpp
+++ b/editor/libeditor/EditorBase.cpp
@@ -1453,7 +1453,7 @@ EditorBase::InsertNode(nsIContent& aNode,
     CreateTxnForInsertNode(aNode, aParent, aPosition);
   nsresult rv = DoTransaction(transaction);
 
-  mRangeUpdater.SelAdjInsertNode(aParent.AsDOMNode(), aPosition);
+  mRangeUpdater.SelAdjInsertNode(&aParent, aPosition);
 
   {
     AutoActionListenerArray listeners(mActionListeners);
diff --git a/editor/libeditor/SelectionState.cpp b/editor/libeditor/SelectionState.cpp
index de6123a925fb..6607a6b654ff 100644
--- a/editor/libeditor/SelectionState.cpp
+++ b/editor/libeditor/SelectionState.cpp
@@ -242,14 +242,6 @@ RangeUpdater::SelAdjCreateNode(nsINode* aParent,
   return NS_OK;
 }
 
-nsresult
-RangeUpdater::SelAdjCreateNode(nsIDOMNode* aParent,
-                               int32_t aPosition)
-{
-  nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
-  return SelAdjCreateNode(parent, aPosition);
-}
-
 nsresult
 RangeUpdater::SelAdjInsertNode(nsINode* aParent,
                                int32_t aPosition)
@@ -257,13 +249,6 @@ RangeUpdater::SelAdjInsertNode(nsINode* aParent,
   return SelAdjCreateNode(aParent, aPosition);
 }
 
-nsresult
-RangeUpdater::SelAdjInsertNode(nsIDOMNode* aParent,
-                               int32_t aPosition)
-{
-  return SelAdjCreateNode(aParent, aPosition);
-}
-
 void
 RangeUpdater::SelAdjDeleteNode(nsINode* aNode)
 {
@@ -319,14 +304,6 @@ RangeUpdater::SelAdjDeleteNode(nsINode* aNode)
   }
 }
 
-void
-RangeUpdater::SelAdjDeleteNode(nsIDOMNode* aNode)
-{
-  nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
-  NS_ENSURE_TRUE_VOID(node);
-  return SelAdjDeleteNode(node);
-}
-
 nsresult
 RangeUpdater::SelAdjSplitNode(nsIContent& aOldRightNode,
                               int32_t aOffset,
diff --git a/editor/libeditor/SelectionState.h b/editor/libeditor/SelectionState.h
index 3677dc89d8ad..493705f825ef 100644
--- a/editor/libeditor/SelectionState.h
+++ b/editor/libeditor/SelectionState.h
@@ -109,11 +109,8 @@ public:
   // DOM Range gravity will promote the selection out of the node on deletion,
   // which is not what you want if you know you are reinserting it.
   nsresult SelAdjCreateNode(nsINode* aParent, int32_t aPosition);
-  nsresult SelAdjCreateNode(nsIDOMNode* aParent, int32_t aPosition);
   nsresult SelAdjInsertNode(nsINode* aParent, int32_t aPosition);
-  nsresult SelAdjInsertNode(nsIDOMNode* aParent, int32_t aPosition);
   void SelAdjDeleteNode(nsINode* aNode);
-  void SelAdjDeleteNode(nsIDOMNode* aNode);
   nsresult SelAdjSplitNode(nsIContent& aOldRightNode, int32_t aOffset,
                            nsIContent* aNewLeftNode);
   nsresult SelAdjJoinNodes(nsINode& aLeftNode,