Revert 167808 - Get rid of use of CreateStringValue in chromeos/ directory.

chrome/browser/chromeos/settings/system_settings_provider.cc

 // Copyright (c) 2012 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/chromeos/settings/system_settings_provider.h"
 
 #include "base/string16.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/cros_settings_names.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace chromeos {
 
 SystemSettingsProvider::SystemSettingsProvider(
     const NotifyObserversCallback& notify_cb)
     : CrosSettingsProvider(notify_cb) {
   system::TimezoneSettings *timezone_settings =
       system::TimezoneSettings::GetInstance();
   timezone_settings->AddObserver(this);
-  timezone_value_.reset(new base::StringValue(
+  timezone_value_.reset(base::Value::CreateStringValue(
       timezone_settings->GetCurrentTimezoneID()));
 }
 
 SystemSettingsProvider::~SystemSettingsProvider() {
   system::TimezoneSettings::GetInstance()->RemoveObserver(this);
 }
 
 void SystemSettingsProvider::DoSet(const std::string& path,
                                    const base::Value& in_value) {
   // Non-guest users can change the time zone.
@@ skipping 20 matching lines @@
     SystemSettingsProvider::PrepareTrustedValues(const base::Closure& cb) {
   return TRUSTED;
 }
 
 bool SystemSettingsProvider::HandlesSetting(const std::string& path) const {
   return path == kSystemTimezone;
 }
 
 void SystemSettingsProvider::TimezoneChanged(const icu::TimeZone& timezone) {
   // Fires system setting change notification.
-  timezone_value_.reset(new base::StringValue(
+  timezone_value_.reset(base::Value::CreateStringValue(
       system::TimezoneSettings::GetTimezoneID(timezone)));
   NotifyObservers(kSystemTimezone);
 }
 
 }  // namespace chromeos