autofill: switch autofill_regexes to RE2 library

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 <algorithm>
 #include <ostream>
@@ skipping 426 matching lines @@
   formatted_date.append(base::ASCIIToUTF16("/"));
   formatted_date.append(Expiration4DigitYearAsString());
 
   base::string16 separator =
       l10n_util::GetStringUTF16(IDS_AUTOFILL_ADDRESS_SUMMARY_SEPARATOR);
   return std::make_pair(obfuscated_cc_number, separator + formatted_date);
 }
 
 void CreditCard::SetInfoForMonthInputType(const base::string16& value) {
   // Check if |text| is "yyyy-mm" format first, and check normal month format.
-  if (!MatchesPattern(value, base::UTF8ToUTF16("^[0-9]{4}-[0-9]{1,2}$")))
+  if (!MatchesPattern(value, "^[0-9]{4}-[0-9]{1,2}$"))
     return;
 
   std::vector<base::StringPiece16> year_month = base::SplitStringPiece(
       value, base::ASCIIToUTF16("-"),
       base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
   DCHECK_EQ(2u, year_month.size());
   int num = 0;
   bool converted = false;
   converted = base::StringToInt(year_month[0], &num);
   DCHECK(converted);
@@ skipping 330 matching lines @@
 const char kAmericanExpressCard[] = "americanExpressCC";
 const char kDinersCard[] = "dinersCC";
 const char kDiscoverCard[] = "discoverCC";
 const char kGenericCard[] = "genericCC";
 const char kJCBCard[] = "jcbCC";
 const char kMasterCard[] = "masterCardCC";
 const char kUnionPay[] = "unionPayCC";
 const char kVisaCard[] = "visaCC";
 
 }  // namespace autofill