PART1: Initiated the SignedSettings refactoring.

chrome/browser/ui/webui/options/chromeos/system_options_handler.cc

Index: chrome/browser/ui/webui/options/chromeos/system_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/system_options_handler.cc b/chrome/browser/ui/webui/options/chromeos/system_options_handler.cc
index 4f343f9bd24f434dfbe4e46067bef984d837cd12..cdd6d4a21e8e904246960c7d9e3014d6a6d606a2 100644
--- a/chrome/browser/ui/webui/options/chromeos/system_options_handler.cc
+++ b/chrome/browser/ui/webui/options/chromeos/system_options_handler.cc
@@ -15,6 +15,7 @@
 #include "content/common/json_value_serializer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/accessibility_util.h"
+#include "chrome/browser/chromeos/cros_settings.h"
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ -30,9 +31,7 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
-SystemOptionsHandler::SystemOptionsHandler()
-    : chromeos::CrosOptionsPageUIHandler(
-        new chromeos::SystemSettingsProvider()) {
+SystemOptionsHandler::SystemOptionsHandler() {
 }
 
 SystemOptionsHandler::~SystemOptionsHandler() {
@@ -82,7 +81,8 @@ void SystemOptionsHandler::GetLocalizedValues(
 
   localized_strings->Set("timezoneList",
       reinterpret_cast<chromeos::SystemSettingsProvider*>(

[Denis Lagno, 2011/09/20 14:05:22]

btw, why not static_cast here?

[pastarmovj, 2011/09/20 17:11:52]

Done.

-          settings_provider_.get())->GetTimezoneList());
+          chromeos::CrosSettings::Get()->GetProvider(
+              chromeos::kSystemTimezone))->GetTimezoneList());
 }
 
 void SystemOptionsHandler::Initialize() {