Revert of [ObjC ARC] Converts ios/chrome/browser/ui/autofill:autofill to ARC.Automatically generated ARCMig…

ios/chrome/browser/ui/autofill/autofill_save_card_infobar.mm

 // Copyright 2016 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.
 
 #include <utility>
 
 #include "components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h"
 #include "components/autofill/core/browser/autofill_save_card_infobar_mobile.h"
 #include "components/infobars/core/infobar.h"
 #include "ios/chrome/browser/infobars/infobar_utils.h"
 
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
 namespace autofill {
 
 std::unique_ptr<infobars::InfoBar> CreateSaveCardInfoBarMobile(
     std::unique_ptr<AutofillSaveCardInfoBarDelegateMobile> delegate) {
   // TODO(jdonnelly): Implement iOS save card infobar. http://crbug.com/535784
   return ::CreateConfirmInfoBar(std::move(delegate));
 }
 
 }  // namespace autofill