assorted work to expose nav html dtd to the editor

git-svn-id: svn://10.0.0.236/trunk@40179 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/parser/htmlparser/src/nsViewSourceHTML.cpp

@@ -544,6 +544,15 @@ PRBool CViewSourceHTML::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 CViewSourceHTML::StringTagToIntTag(nsString &aTag, PRInt32* aIntTag) const
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
 /**
  *  This method gets called to determine whether a given 
  *  tag is itself a container