Convert string16 -> base::string16 in components/

components/autofill/browser/validation.h

 // 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.
 
 #ifndef COMPONENTS_AUTOFILL_BROWSER_VALIDATION_H_
 #define COMPONENTS_AUTOFILL_BROWSER_VALIDATION_H_
 
 #include "base/string16.h"
 
 namespace base {
 class Time;
 }  // namespace base;
 
 namespace autofill {
 
 // Returns true if |year| and |month| describe a date later than |now|.
 // |year| must have 4 digits.
-bool IsValidCreditCardExpirationDate(const string16& year,
-                                     const string16& month,
+bool IsValidCreditCardExpirationDate(const base::string16& year,
+                                     const base::string16& month,
                                      const base::Time& now);
 
 // Returns true if |text| looks like a valid credit card number.
 // Uses the Luhn formula to validate the number.
-bool IsValidCreditCardNumber(const string16& text);
+bool IsValidCreditCardNumber(const base::string16& text);
 
 // Returns true if |text| looks like a valid credit card security code.
-bool IsValidCreditCardSecurityCode(const string16& text);
+bool IsValidCreditCardSecurityCode(const base::string16& text);
 
 // Returns true if |code| looks like a valid credit card security code
 // for the type of credit card designated by |number|.
-bool IsValidCreditCardSecurityCode(const string16& code,
-                                   const string16& number);
+bool IsValidCreditCardSecurityCode(const base::string16& code,
+                                   const base::string16& number);
 
 // Returns true if |text| looks like a valid e-mail address.
-bool IsValidEmailAddress(const string16& text);
+bool IsValidEmailAddress(const base::string16& text);
 
 // Returns true if |text| looks like a valid zip code.
 // Valid for US zip codes only.
-bool IsValidZip(const string16& text);
+bool IsValidZip(const base::string16& text);
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_BROWSER_VALIDATION_H_