Autofill: Recognize more credit card date fields.

components/autofill/core/browser/autofill_regex_constants.cc.utf8

 // 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 164 matching lines @@
 const char kExpirationYearRe[] =
     "exp|^/|year"
     "|ablaufdatum|gueltig|gültig|yahr"  // de-DE
     "|fecha"  // es
     "|scadenza"  // it-IT
     "|有効期限"  // ja-JP
     "|validade"  // pt-BR, pt-PT
     "|Срок действия карты"  // ru
     "|年|有效期";  // zh-CN
 
-// This regex is a little bit nasty, but it is simply requiring exactly two
-// adjacent y's.
+// The "yy" portion of the regex is just looking for two adjacent y's.
 const char kExpirationDate2DigitYearRe[] =
-    "exp.*date.*[^y]yy([^y]|$)";
+    "(exp.*date.*|mm\\s*[-/]\\s*)[^y]yy([^y]|$)";
+const char kExpirationDate4DigitYearRe[] =
+    "^mm\\s*[-/]\\syyyy$";
 const char kExpirationDateRe[] =
     "expir|exp.*date"
     "|gueltig|gültig"  // de-DE
     "|fecha"  // es
     "|date.*exp"  // fr-FR
     "|scadenza"  // it-IT
     "|有効期限"  // ja-JP
     "|validade"  // pt-BR, pt-PT
     "|Срок действия карты";  // ru
 const char kGiftCardRe[] =
@@ skipping 90 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