[Autofill] Add a separate enumeration for HTML field type hints.

components/autofill/core/browser/credit_card.cc

 // Copyright 2013 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 "components/autofill/core/browser/credit_card.h"
 
 #include <stddef.h>
 
 #include <ostream>
 #include <string>
@@ skipping 353 matching lines @@
       break;
 
     default:
       NOTREACHED() << "Attempting to set unknown info-type " << type;
       break;
   }
 }
 
 base::string16 CreditCard::GetInfo(const AutofillType& type,
                                    const std::string& app_locale) const {
-  if (type.native_type() == CREDIT_CARD_NUMBER)
+  NativeFieldType native_type = type.GetEquivalentNativeType();
+  if (native_type == CREDIT_CARD_NUMBER)
     return StripSeparators(number_);
 
-  return GetRawInfo(type.native_type());
+  return GetRawInfo(native_type);
 }
 
 bool CreditCard::SetInfo(const AutofillType& type,
                          const base::string16& value,
                          const std::string& app_locale) {
-  NativeFieldType native_type = type.native_type();
+  NativeFieldType native_type = type.GetEquivalentNativeType();
   if (native_type == CREDIT_CARD_NUMBER)
     SetRawInfo(native_type, StripSeparators(value));
   else if (native_type == CREDIT_CARD_EXP_MONTH)
     SetExpirationMonthFromString(value, app_locale);
   else
     SetRawInfo(native_type, value);
 
   return true;
 }
 
@@ skipping 310 matching lines @@
 const char* const kAmericanExpressCard = "americanExpressCC";
 const char* const kDinersCard = "dinersCC";
 const char* const kDiscoverCard = "discoverCC";
 const char* const kGenericCard = "genericCC";
 const char* const kJCBCard = "jcbCC";
 const char* const kMasterCard = "masterCardCC";
 const char* const kUnionPay = "unionPayCC";
 const char* const kVisaCard = "visaCC";
 
 }  // namespace autofill