[Autofill] Move FieldTypeGroup out of the AutofillType class.

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 515 matching lines @@
   expiration_month_ = imported_card.expiration_month_;
   expiration_year_ = imported_card.expiration_year_;
 
   return true;
 }
 
 void CreditCard::FillFormField(const AutofillField& field,
                                size_t /*variant*/,
                                const std::string& app_locale,
                                FormFieldData* field_data) const {
-  DCHECK_EQ(AutofillType::CREDIT_CARD, AutofillType(field.type()).group());
+  DCHECK_EQ(CREDIT_CARD, AutofillType(field.type()).group());
   DCHECK(field_data);
 
   if (field_data->form_control_type == "select-one") {
     FillSelectControl(field.type(), app_locale, field_data);
   } else if (field_data->form_control_type == "month") {
     // HTML5 input="month" consists of year-month.
     base::string16 year = GetInfo(CREDIT_CARD_EXP_4_DIGIT_YEAR, app_locale);
     base::string16 month = GetInfo(CREDIT_CARD_EXP_MONTH, app_locale);
     if (!year.empty() && !month.empty()) {
       // Fill the value only if |this| includes both year and month
@@ skipping 154 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