autofill: switch autofill_regexes to RE2 library

components/autofill/core/browser/phone_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/phone_field.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ skipping 258 matching lines @@
       NOTREACHED();
       break;
   }
   return std::string();
 }
 
 // static
 bool PhoneField::ParsePhoneField(AutofillScanner* scanner,
                                  const std::string& regex,
                                  AutofillField** field) {
-  return ParseFieldSpecifics(scanner,
-                             base::UTF8ToUTF16(regex),
-                             MATCH_DEFAULT | MATCH_TELEPHONE | MATCH_NUMBER,
-                             field);
+  return ParseFieldSpecifics(
+      scanner, regex, MATCH_DEFAULT | MATCH_TELEPHONE | MATCH_NUMBER, field);
 }
 
 }  // namespace autofill