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

ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h

Index: ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h
diff --git a/ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h b/ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h
index d85fd604d42eedc4baeb875205b1dd2a375687f6..afc444a499807753e2c4be23f193ce35b937f0bf 100644
--- a/ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h
+++ b/ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h
@@ -8,7 +8,6 @@
 #include <memory>
 
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "components/password_manager/core/browser/password_manager_metrics_util.h"
 
@@ -27,7 +26,7 @@
  protected:
   IOSChromePasswordManagerInfoBarDelegate(
       bool is_smart_lock_branding_enabled,
-      scoped_refptr<password_manager::PasswordFormManager> form_manager);
+      std::unique_ptr<password_manager::PasswordFormManager> form_manager);
 
   password_manager::PasswordFormManager* form_to_save() const {
     return form_to_save_.get();
@@ -51,7 +50,7 @@
 
   // The password_manager::PasswordFormManager managing the form we're asking
   // the user about, and should save as per their decision.
-  scoped_refptr<password_manager::PasswordFormManager> form_to_save_;
+  std::unique_ptr<password_manager::PasswordFormManager> form_to_save_;
 
   // Used to track the results we get from the info bar.
   password_manager::metrics_util::UIDismissalReason infobar_response_;