Move more string_util functions to base namespace.

components/autofill/core/browser/validation.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/validation.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 70 matching lines @@
   if (type == kUnionPay)
     return true;
 
   // Use the Luhn formula [3] to validate the number.
   // [3] http://en.wikipedia.org/wiki/Luhn_algorithm
   int sum = 0;
   bool odd = false;
   for (base::string16::reverse_iterator iter = number.rbegin();
        iter != number.rend();
        ++iter) {
-    if (!IsAsciiDigit(*iter))
+    if (!base::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 base::string16& text) {
   if (text.size() < 3U || text.size() > 4U)
     return false;
 
   for (base::string16::const_iterator iter = text.begin();
        iter != text.end();
        ++iter) {
-    if (!IsAsciiDigit(*iter))
+    if (!base::IsAsciiDigit(*iter))
       return false;
   }
   return true;
 }
 
 bool IsValidCreditCardSecurityCode(const base::string16& code,
                                    const base::string16& number) {
   const char* const type = CreditCard::GetCreditCardType(number);
   size_t required_length = 3;
   if (type == kAmericanExpressCard)
@@ skipping 76 matching lines @@
                                              number_string.begin() + 9),
                          &serial)
       || serial == 0) {
     return false;
   }
 
   return true;
 }
 
 }  // namespace autofill