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

chrome/browser/password_manager/chrome_password_manager_client.cc

Index: chrome/browser/password_manager/chrome_password_manager_client.cc
diff --git a/chrome/browser/password_manager/chrome_password_manager_client.cc b/chrome/browser/password_manager/chrome_password_manager_client.cc
index 19c012e16377d5760ab30a6c29960c8b85e8ede8..b6c0edbde69cc91e9d1d77476679cc4163a0a78d 100644
--- a/chrome/browser/password_manager/chrome_password_manager_client.cc
+++ b/chrome/browser/password_manager/chrome_password_manager_client.cc
@@ -254,7 +254,7 @@
 }
 
 bool ChromePasswordManagerClient::PromptUserToSaveOrUpdatePassword(
-    scoped_refptr<password_manager::PasswordFormManager> form_to_save,
+    std::unique_ptr<password_manager::PasswordFormManager> form_to_save,
     bool update_password) {
   // Save password infobar and the password bubble prompts in case of
   // "webby" URLs and do not prompt in case of "non-webby" URLS (e.g. file://).
@@ -374,7 +374,7 @@
 }
 
 void ChromePasswordManagerClient::AutomaticPasswordSave(
-    scoped_refptr<password_manager::PasswordFormManager> saved_form) {
+    std::unique_ptr<password_manager::PasswordFormManager> saved_form) {
 #if defined(OS_ANDROID)
   GeneratedPasswordSavedInfoBarDelegateAndroid::Create(web_contents());
 #else