diff --git a/mozilla/content/xul/content/src/nsXULElement.h b/mozilla/content/xul/content/src/nsXULElement.h
index 8251da950ae..a7bdf9f15bd 100644
--- a/mozilla/content/xul/content/src/nsXULElement.h
+++ b/mozilla/content/xul/content/src/nsXULElement.h
@@ -402,6 +402,7 @@ public:
                                   nsIAtom*& aName, nsIAtom*& aPrefix) const;
     NS_IMETHOD GetAttributeCount(PRInt32& aResult) const;
     NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
+    NS_IMETHOD DumpContent(FILE* out, PRInt32 aIndent,PRBool aDumpAll) const { return NS_OK; }
     NS_IMETHOD BeginConvertToXIF(nsIXIFConverter * aConverter) const;
     NS_IMETHOD ConvertContentToXIF(nsIXIFConverter * aConverter) const;
     NS_IMETHOD FinishConvertToXIF(nsIXIFConverter * aConverter) const;
diff --git a/mozilla/rdf/content/src/nsXULElement.h b/mozilla/rdf/content/src/nsXULElement.h
index 8251da950ae..a7bdf9f15bd 100644
--- a/mozilla/rdf/content/src/nsXULElement.h
+++ b/mozilla/rdf/content/src/nsXULElement.h
@@ -402,6 +402,7 @@ public:
                                   nsIAtom*& aName, nsIAtom*& aPrefix) const;
     NS_IMETHOD GetAttributeCount(PRInt32& aResult) const;
     NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
+    NS_IMETHOD DumpContent(FILE* out, PRInt32 aIndent,PRBool aDumpAll) const { return NS_OK; }
     NS_IMETHOD BeginConvertToXIF(nsIXIFConverter * aConverter) const;
     NS_IMETHOD ConvertContentToXIF(nsIXIFConverter * aConverter) const;
     NS_IMETHOD FinishConvertToXIF(nsIXIFConverter * aConverter) const;