Revert of [Password Manager] Convert |pending_login_managers_| to an array of scoped_refptr

components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc

Index: components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc
diff --git a/components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc b/components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc
index df684b2727276c23ac001e9fdc4015ae1768530d..88caa117d772fa4a573639161b2a0e000bc819ee 100644
--- a/components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc
+++ b/components/password_manager/core/browser/credential_manager_password_form_manager_unittest.cc
@@ -50,14 +50,12 @@
 TEST_F(CredentialManagerPasswordFormManagerTest, AbortEarly) {
   PasswordForm observed_form;
   MockDelegate delegate;
-  auto form_manager =
-      base::MakeRefCounted<CredentialManagerPasswordFormManager>(
-          &client_, driver_.AsWeakPtr(), observed_form,
-          base::MakeUnique<PasswordForm>(observed_form), &delegate,
-          base::MakeUnique<StubFormSaver>(),
-          base::MakeUnique<FakeFormFetcher>());
+  auto form_manager = base::MakeUnique<CredentialManagerPasswordFormManager>(
+      &client_, driver_.AsWeakPtr(), observed_form,
+      base::MakeUnique<PasswordForm>(observed_form), &delegate,
+      base::MakeUnique<StubFormSaver>(), base::MakeUnique<FakeFormFetcher>());
 
-  auto deleter = [&form_manager]() { form_manager = nullptr; };
+  auto deleter = [&form_manager]() { form_manager.reset(); };
 
   // Simulate that the PasswordStore responded to the FormFetcher. As a result,
   // |form_manager| should call the delegate's OnProvisionalSaveComplete, which