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..434d45d4cacc68848fdc70c64f59ee9188610d1c 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() {
@@ -81,8 +80,9 @@ void SystemOptionsHandler::GetLocalizedValues(
           IDS_OPTIONS_SETTINGS_ACCESSIBILITY_DESCRIPTION));
 
   localized_strings->Set("timezoneList",
-      reinterpret_cast<chromeos::SystemSettingsProvider*>(
-          settings_provider_.get())->GetTimezoneList());
+      static_cast<chromeos::SystemSettingsProvider*>(
+          chromeos::CrosSettings::Get()->GetProvider(
+              chromeos::kSystemTimezone))->GetTimezoneList());

[Mattias Nissler (ping if slow), 2011/09/21 11:12:59]

shouldn't this also go through CrosSettings?

[pastarmovj, 2011/09/23 15:19:32]

I put a todo not to forget it but I think it will be better to do this in the CL
that will introduce some more list support for CrosSettings (the same needed to
wipe out Whitelist functions from UserCrosSettingsProvider).

 }
 
 void SystemOptionsHandler::Initialize() {