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

ios/chrome/browser/passwords/ios_chrome_save_password_infobar_delegate.mm

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/passwords/ios_chrome_save_password_infobar_delegate.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "components/infobars/core/infobar.h"
 #include "components/infobars/core/infobar_manager.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/password_manager_constants.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using password_manager::PasswordFormManager;
 
 // static
 void IOSChromeSavePasswordInfoBarDelegate::Create(
     bool is_smart_lock_branding_enabled,
     infobars::InfoBarManager* infobar_manager,
-    std::unique_ptr<PasswordFormManager> form_to_save) {
+    scoped_refptr<PasswordFormManager> form_to_save) {
   DCHECK(infobar_manager);
   auto delegate = base::WrapUnique(new IOSChromeSavePasswordInfoBarDelegate(
       is_smart_lock_branding_enabled, std::move(form_to_save)));
   infobar_manager->AddInfoBar(
       infobar_manager->CreateConfirmInfoBar(std::move(delegate)));
 }
 
 IOSChromeSavePasswordInfoBarDelegate::~IOSChromeSavePasswordInfoBarDelegate() {}
 
 IOSChromeSavePasswordInfoBarDelegate::IOSChromeSavePasswordInfoBarDelegate(
     bool is_smart_lock_branding_enabled,
-    std::unique_ptr<PasswordFormManager> form_to_save)
+    scoped_refptr<PasswordFormManager> form_to_save)
     : IOSChromePasswordManagerInfoBarDelegate(is_smart_lock_branding_enabled,
                                               std::move(form_to_save)) {}
 
 infobars::InfoBarDelegate::InfoBarIdentifier
 IOSChromeSavePasswordInfoBarDelegate::GetIdentifier() const {
   return IOS_CHROME_SAVE_PASSWORD_INFOBAR_DELEGATE;
 }
 
 base::string16 IOSChromeSavePasswordInfoBarDelegate::GetMessageText() const {
   if (is_smart_lock_branding_enabled()) {
@@ skipping 17 matching lines @@
   set_infobar_response(password_manager::metrics_util::CLICKED_SAVE);
   return true;
 }
 
 bool IOSChromeSavePasswordInfoBarDelegate::Cancel() {
   DCHECK(form_to_save());
   form_to_save()->PermanentlyBlacklist();
   set_infobar_response(password_manager::metrics_util::CLICKED_NEVER);
   return true;
 }