Make FormFetcher a PasswordStoreConsumer

components/password_manager/core/browser/password_manager.h

Index: components/password_manager/core/browser/password_manager.h
diff --git a/components/password_manager/core/browser/password_manager.h b/components/password_manager/core/browser/password_manager.h
index f617cb0ef07a1c8bf5a7be37f55be2741fea5a1b..467f6a886550e9321030a52d58c749ff60a3a927 100644
--- a/components/password_manager/core/browser/password_manager.h
+++ b/components/password_manager/core/browser/password_manager.h
@@ -173,6 +173,15 @@ class PasswordManager : public LoginModel {
 
   PasswordManagerClient* client() { return client_; }
 
+#if defined(UNIT_TEST)
+  // TODO(crbug.com/639786): Replace using this by quering the factory for
+  // mocked PasswordFormManagers.
+  const std::vector<std::unique_ptr<PasswordFormManager>>&
+  pending_login_managers() {
+    return pending_login_managers_;
+  }
+#endif
+
  private:
   enum ProvisionalSaveFailure {
     SAVING_DISABLED,