iwyu: Cleanup in the following files:

chrome/browser/autofill/credit_card.h

 // 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.
 
 #ifndef CHROME_BROWSER_AUTOFILL_CREDIT_CARD_H_
 #define CHROME_BROWSER_AUTOFILL_CREDIT_CARD_H_
 #pragma once
 
+#include <ostream>
+#include <string>
 #include <vector>
 
 #include "base/string16.h"
+#include "chrome/browser/autofill/field_types.h"
 #include "chrome/browser/autofill/form_group.h"
 
 // A form group that stores credit card information.
 class CreditCard : public FormGroup {
  public:
   explicit CreditCard(const std::string& guid);
 
   // For use in STL containers.
   CreditCard();
   CreditCard(const CreditCard& credit_card);
@@ skipping 135 matching lines @@
 extern const char* const kAmericanExpressCard;
 extern const char* const kDinersCard;
 extern const char* const kDiscoverCard;
 extern const char* const kGenericCard;
 extern const char* const kJCBCard;
 extern const char* const kMasterCard;
 extern const char* const kSoloCard;
 extern const char* const kVisaCard;
 
 #endif  // CHROME_BROWSER_AUTOFILL_CREDIT_CARD_H_