--- a/netwerk/base/RustURL.cpp
+++ b/netwerk/base/RustURL.cpp
@@ -438,16 +438,34 @@ RustURL::GetSpecIgnoringRef(nsACString &
     return NS_OK;
   }
 
   aSpecIgnoringRef.Truncate(pos);
   return NS_OK;
 }
 
 NS_IMETHODIMP
+RustURL::GetDisplaySpec(nsACString &aUnicodeSpec)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+RustURL::GetDisplayHostPort(nsACString &aUnicodeHostPort)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+RustURL::GetDisplayHost(nsACString &aUnicodeHost)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
 RustURL::GetHasRef(bool *aHasRef)
 {
   *aHasRef = false;
   return rusturl_has_fragment(mURL.get(), aHasRef);
 }
 
 /// nsIURL