assorted work to expose nav html dtd to editor

git-svn-id: svn://10.0.0.236/trunk@40185 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/htmlparser/src/nsXIFDTD.cpp

@@ -932,6 +932,15 @@ PRBool nsXIFDTD::CanContain(PRInt32 aParent,PRInt32 aChild) const {
   return result;
 }
 
+/**
+ * Give rest of world access to our tag enums, so that CanContain(), etc,
+ * become useful.
+ */
+NS_IMETHODIMP nsXIFDTD::StringTagToIntTag(nsString &aTag, PRInt32* aIntTag) const
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
 /**
  *  This method gets called to determine whether a given 
  *  tag can contain newlines. Most do not.