diff --git a/dom/interfaces/xul/nsIDOMXULDocument.idl b/dom/interfaces/xul/nsIDOMXULDocument.idl
index e78720b43b9b..1116b642e5ba 100644
--- a/dom/interfaces/xul/nsIDOMXULDocument.idl
+++ b/dom/interfaces/xul/nsIDOMXULDocument.idl
@@ -13,14 +13,6 @@ interface nsIBoxObject;
 [uuid(7790d4c3-e8f0-4e29-9887-d683ed2b2a44)]
 interface nsIDOMXULDocument : nsIDOMDocument
 {
-  void                      addBroadcastListenerFor(in nsIDOMElement broadcaster,
-                                                    in nsIDOMElement observer,
-                                                    in DOMString attr);
-
-  void                      removeBroadcastListenerFor(in nsIDOMElement broadcaster,
-                                                       in nsIDOMElement observer,
-                                                       in DOMString attr);
-
   void                      persist(in DOMString id, in DOMString attr);
 
   nsIBoxObject getBoxObjectFor(in nsIDOMElement elt);
diff --git a/dom/xul/XULDocument.cpp b/dom/xul/XULDocument.cpp
index 57308591efbc..b29d261a19d2 100644
--- a/dom/xul/XULDocument.cpp
+++ b/dom/xul/XULDocument.cpp
@@ -678,19 +678,6 @@ XULDocument::SynchronizeBroadcastListener(Element *aBroadcaster,
     }
 }
 
-NS_IMETHODIMP
-XULDocument::AddBroadcastListenerFor(nsIDOMElement* aBroadcaster,
-                                     nsIDOMElement* aListener,
-                                     const nsAString& aAttr)
-{
-    ErrorResult rv;
-    nsCOMPtr<Element> broadcaster = do_QueryInterface(aBroadcaster);
-    nsCOMPtr<Element> listener = do_QueryInterface(aListener);
-    NS_ENSURE_ARG(broadcaster && listener);
-    AddBroadcastListenerFor(*broadcaster, *listener, aAttr, rv);
-    return rv.StealNSResult();
-}
-
 void
 XULDocument::AddBroadcastListenerFor(Element& aBroadcaster, Element& aListener,
                                      const nsAString& aAttr, ErrorResult& aRv)
@@ -759,18 +746,6 @@ XULDocument::AddBroadcastListenerFor(Element& aBroadcaster, Element& aListener,
     SynchronizeBroadcastListener(&aBroadcaster, &aListener, aAttr);
 }
 
-NS_IMETHODIMP
-XULDocument::RemoveBroadcastListenerFor(nsIDOMElement* aBroadcaster,
-                                        nsIDOMElement* aListener,
-                                        const nsAString& aAttr)
-{
-    nsCOMPtr<Element> broadcaster = do_QueryInterface(aBroadcaster);
-    nsCOMPtr<Element> listener = do_QueryInterface(aListener);
-    NS_ENSURE_ARG(broadcaster && listener);
-    RemoveBroadcastListenerFor(*broadcaster, *listener, aAttr);
-    return NS_OK;
-}
-
 void
 XULDocument::RemoveBroadcastListenerFor(Element& aBroadcaster,
                                         Element& aListener,
diff --git a/dom/xul/nsXULElement.cpp b/dom/xul/nsXULElement.cpp
index a841cded0934..dad57eff3058 100644
--- a/dom/xul/nsXULElement.cpp
+++ b/dom/xul/nsXULElement.cpp
@@ -1242,14 +1242,12 @@ nsXULElement::ParseAttribute(int32_t aNamespaceID,
 void
 nsXULElement::RemoveBroadcaster(const nsAString & broadcasterId)
 {
-    nsCOMPtr<nsIDOMXULDocument> xuldoc = do_QueryInterface(OwnerDoc());
+    XULDocument* xuldoc = OwnerDoc()->AsXULDocument();
     if (xuldoc) {
-        nsCOMPtr<nsIDOMElement> broadcaster;
-        nsCOMPtr<nsIDOMDocument> domDoc (do_QueryInterface(xuldoc));
-        domDoc->GetElementById(broadcasterId, getter_AddRefs(broadcaster));
+        Element* broadcaster = xuldoc->GetElementById(broadcasterId);
         if (broadcaster) {
-            xuldoc->RemoveBroadcastListenerFor(broadcaster, this,
-              NS_LITERAL_STRING("*"));
+            xuldoc->RemoveBroadcastListenerFor(*broadcaster, *this,
+                                               NS_LITERAL_STRING("*"));
         }
     }
 }