autofill: switch autofill_regexes to RE2 library

components/autofill/core/browser/autofill_regex_constants.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.
 
 // This file contains UTF8 strings that we want as char arrays.  To avoid
 // different compilers, we use a script to convert the UTF8 strings into
 // numeric literals (\x##).
 
 #include "components/autofill/core/browser/autofill_regex_constants.h"
 
@@ skipping 92 matching lines @@
     "|ciudad|provincia|localidad|poblacion"  // es
     "|ville|commune"  // fr-FR
     "|localita"  // it-IT
     "|市区町村"  // ja-JP
     "|cidade"  // pt-BR, pt-PT
     "|Город"  // ru
     "|市"  // zh-CN
     "|分區"  // zh-TW
     "|^시[^도·・]|시[·・]?군[·・]?구";  // ko-KR
 const char kStateRe[] =
-    "(?<!united )state|county|region|province"
+    "state|county|region|province"
     "|land"  // de-DE
     "|county|principality"  // en-UK
     "|都道府県"  // ja-JP
     "|estado|provincia"  // pt-BR, pt-PT
     "|область"  // ru
     "|省"  // zh-CN
     "|地區"  // zh-TW
     "|^시[·・]?도";  // ko-KR
 
 /////////////////////////////////////////////////////////////////////////////
@@ skipping 166 matching lines @@
     "prefix|exchange"
     "|preselection"  // fr-FR
     "|ddd";  // pt-BR, pt-PT
 const char kPhoneSuffixRe[] =
     "suffix";
 const char kPhoneExtensionRe[] =
     "\\bext|ext\\b|extension"
     "|ramal";  // pt-BR, pt-PT
 
 }  // namespace autofill