Autofill DOMUI Prefs should work with i18n phone numbers

chrome/browser/autofill/phone_number_i18n.cc

+// Copyright (c) 2011 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 "chrome/browser/autofill/phone_number_i18n.h"
+
+#include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "third_party/libphonenumber/cpp/src/phonenumberutil.h"
+
+using i18n::phonenumbers::PhoneNumber;
+using i18n::phonenumbers::PhoneNumberUtil;
+
+namespace autofill_i18n {
+
+bool PhoneNumbersMatch(const string16& number_a,
+                       const string16& number_b,
+                       const std::string& country_code) {
+  DCHECK(country_code.size() == 0 || country_code.size() == 2);
+  std::string safe_country_code(country_code);
+  if (safe_country_code.size() == 0)
+    safe_country_code = "US";
+
+  PhoneNumberUtil *phone_util = PhoneNumberUtil::GetInstance();
+  PhoneNumber phone_number_a;
+  phone_util->Parse(UTF16ToUTF8(number_a), safe_country_code, &phone_number_a);
+  PhoneNumber phone_number_b;
+  phone_util->Parse(UTF16ToUTF8(number_b), safe_country_code, &phone_number_b);
+
+  PhoneNumberUtil::MatchType match = phone_util->IsNumberMatch(phone_number_a,
+                                                               phone_number_b);
+  // Allow |NSN_MATCH| for implied country code if one is not set.
+  return match == PhoneNumberUtil::NSN_MATCH ||
+         match == PhoneNumberUtil::EXACT_MATCH;
+}
+
+}  // namespace autofill_i18n