iwyu: Cleanup in the following files:

chrome/browser/autofill/credit_card_field.cc

 // Copyright (c) 2011 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 "chrome/browser/autofill/credit_card_field.h"
 
+#include <stddef.h>
+
+#include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
+#include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autofill/autofill_field.h"
+#include "chrome/browser/autofill/field_types.h"
 #include "grit/autofill_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 bool CreditCardField::GetFieldInfo(FieldTypeMap* field_type_map) const {
   bool ok = Add(field_type_map, number_, AutofillType(CREDIT_CARD_NUMBER));
   DCHECK(ok);
 
   // If the heuristics detected first and last name in separate fields,
   // then ignore both fields. Putting them into separate fields is probably
   // wrong, because the credit card can also contain a middle name or middle
@@ skipping 177 matching lines @@
 
 CreditCardField::CreditCardField()
     : cardholder_(NULL),
       cardholder_last_(NULL),
       type_(NULL),
       number_(NULL),
       verification_(NULL),
       expiration_month_(NULL),
       expiration_year_(NULL) {
 }