Rename Origin.unique() to opaque().

components/password_manager/core/browser/form_fetcher_impl.cc

Index: components/password_manager/core/browser/form_fetcher_impl.cc
diff --git a/components/password_manager/core/browser/form_fetcher_impl.cc b/components/password_manager/core/browser/form_fetcher_impl.cc
index 6bff00d8fc6926e333c0316ff59925cc77ad3387..d58ff12cd9a0041629459a6a4d3e60bbca6cc66d 100644
--- a/components/password_manager/core/browser/form_fetcher_impl.cc
+++ b/components/password_manager/core/browser/form_fetcher_impl.cc
@@ -33,7 +33,7 @@ std::vector<std::unique_ptr<PasswordForm>> SplitFederatedMatches(
   const auto first_federated = std::partition(
       store_results->begin(), store_results->end(),
       [](const std::unique_ptr<PasswordForm>& form) {
-        return form->federation_origin.unique();  // False means federated.
+        return form->federation_origin.opaque();  // False means federated.
       });
 
   // Move out federated matches.