autofill: switch autofill_regexes to RE2 library

components/autofill/core/browser/credit_card_field.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_field.h"
 
 #include <stddef.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
@@ skipping 22 matching lines @@
 // consecutive section of |haystack| matches |regex_needles|.
 bool FindConsecutiveStrings(const std::vector<base::string16>& regex_needles,
                             const std::vector<base::string16>& haystack) {
   if (regex_needles.empty() ||
       haystack.empty() ||
       (haystack.size() < regex_needles.size()))
     return false;
 
   for (size_t i = 0; i < haystack.size() - regex_needles.size() + 1; ++i) {
     for (size_t j = 0; j < regex_needles.size(); ++j) {
-      if (!MatchesPattern(haystack[i + j], regex_needles[j]))
+      if (!MatchesPattern(haystack[i + j],
+                          base::UTF16ToASCII(regex_needles[j])))
         break;
 
       if (j == regex_needles.size() - 1)
         return true;
     }
   }
   return false;
 }
 
 // Returns true if a field that has |max_length| can fit the data for a field of
@@ skipping 153 matching lines @@
     return false;
 
   AutofillField* field = scanner->Cursor();
   if (!MatchesFormControlType(field->form_control_type, MATCH_SELECT))
     return false;
 
   if (field->option_values.size() < 12 || field->option_values.size() > 13)
     return false;
 
   // Filter out years.
-  const base::string16 kNumericalYearRe =
-      base::ASCIIToUTF16("[1-9][0-9][0-9][0-9]");
+  const char kNumericalYearRe[] = "[1-9][0-9][0-9][0-9]";
   for (const auto& value : field->option_values) {
     if (MatchesPattern(value, kNumericalYearRe))
       return false;
   }
   for (const auto& value : field->option_contents) {
     if (MatchesPattern(value, kNumericalYearRe))
       return false;
   }
 
   // Look for numerical months.
-  const base::string16 kNumericalMonthRe = base::ASCIIToUTF16("12");
+  const char kNumericalMonthRe[] = "12";
   if (MatchesPattern(field->option_values.back(), kNumericalMonthRe) ||
       MatchesPattern(field->option_contents.back(), kNumericalMonthRe)) {
     return true;
   }
 
   // Maybe do more matches here. e.g. look for (translated) December.
 
   // Unsure? Return false.
   return false;
 }
@@ skipping 212 matching lines @@
 
 ServerFieldType CreditCardField::GetExpirationYearType() const {
   return (expiration_date_
               ? exp_year_type_
               : ((expiration_year_ && expiration_year_->max_length == 2)
                      ? CREDIT_CARD_EXP_2_DIGIT_YEAR
                      : CREDIT_CARD_EXP_4_DIGIT_YEAR));
 }
 
 }  // namespace autofill