Move remaining Autofill code to //components/autofill.

chrome/browser/autofill/validation.cc

-// Copyright (c) 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 "chrome/browser/autofill/validation.h"
-
-#include "base/string_util.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/browser/autofill/autofill_regexes.h"
-#include "chrome/browser/autofill/credit_card.h"
-
-namespace autofill {
-
-bool IsValidCreditCardNumber(const string16& text) {
-  string16 number = CreditCard::StripSeparators(text);
-
-  // Credit card numbers are at most 19 digits in length [1]. 12 digits seems to
-  // be a fairly safe lower-bound [2].
-  // [1] http://www.merriampark.com/anatomycc.htm
-  // [2] http://en.wikipedia.org/wiki/Bank_card_number
-  const size_t kMinCreditCardDigits = 12;
-  const size_t kMaxCreditCardDigits = 19;
-  if (number.size() < kMinCreditCardDigits ||
-      number.size() > kMaxCreditCardDigits)
-    return false;
-
-  // Use the Luhn formula [3] to validate the number.
-  // [3] http://en.wikipedia.org/wiki/Luhn_algorithm
-  int sum = 0;
-  bool odd = false;
-  for (string16::reverse_iterator iter = number.rbegin();
-       iter != number.rend();
-       ++iter) {
-    if (!IsAsciiDigit(*iter))
-      return false;
-
-    int digit = *iter - '0';
-    if (odd) {
-      digit *= 2;
-      sum += digit / 10 + digit % 10;
-    } else {
-      sum += digit;
-    }
-    odd = !odd;
-  }
-
-  return (sum % 10) == 0;
-}
-
-bool IsValidCreditCardSecurityCode(const string16& text) {
-  if (text.size() < 3U || text.size() > 4U)
-    return false;
-
-  for (string16::const_iterator iter = text.begin();
-       iter != text.end();
-       ++iter) {
-    if (!IsAsciiDigit(*iter))
-      return false;
-  }
-  return true;
-}
-
-bool IsValidEmailAddress(const string16& text) {
-  // E-Mail pattern as defined by the WhatWG. (4.10.7.1.5 E-Mail state)
-  const string16 kEmailPattern = ASCIIToUTF16(
-      "^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@"
-      "[a-zA-Z0-9-]+(?:\\.[a-zA-Z0-9-]+)*$");
-  return MatchesPattern(text, kEmailPattern);
-}
-
-bool IsValidZip(const string16& value) {
-  const string16 kZipPattern = ASCIIToUTF16("^\\d{5}(-\\d{4})?$");
-  return MatchesPattern(value, kZipPattern);
-}
-
-}  // namespace autofill