Update the time formatting APIs to use string16....

base/i18n/time_formatting.h

 // Copyright (c) 2009 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.
 
 // Basic time formatting methods.  These methods use the current locale
 // formatting for displaying the time.
 
 #ifndef BASE_I18N_TIME_FORMATTING_H_
 #define BASE_I18N_TIME_FORMATTING_H_
 #pragma once
 
-#include <string>
+#include "base/string16.h"
 
 namespace base {
 
 class Time;
 
 // Returns the time of day, e.g., "3:07 PM".
-std::wstring TimeFormatTimeOfDay(const Time& time);
+string16 TimeFormatTimeOfDay(const Time& time);
 
 // Returns a shortened date, e.g. "Nov 7, 2007"
-std::wstring TimeFormatShortDate(const Time& time);
+string16 TimeFormatShortDate(const Time& time);
 
 // Returns a numeric date such as 12/13/52.
-std::wstring TimeFormatShortDateNumeric(const Time& time);
+string16 TimeFormatShortDateNumeric(const Time& time);
 
 // Formats a time in a friendly sentence format, e.g.
 // "Monday, March 6, 2008 2:44:30 PM".
-std::wstring TimeFormatShortDateAndTime(const Time& time);
+string16 TimeFormatShortDateAndTime(const Time& time);
 
 // Formats a time in a friendly sentence format, e.g.
 // "Monday, March 6, 2008 2:44:30 PM".
-std::wstring TimeFormatFriendlyDateAndTime(const Time& time);
+string16 TimeFormatFriendlyDateAndTime(const Time& time);
 
 // Formats a time in a friendly sentence format, e.g.
 // "Monday, March 6, 2008".
-std::wstring TimeFormatFriendlyDate(const Time& time);
+string16 TimeFormatFriendlyDate(const Time& time);
 
 }  // namespace base
 
 #endif  // BASE_I18N_TIME_FORMATTING_H_