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..ef0a627e869e12662296f56185abbca77efafd08 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() {
@@ -80,9 +79,12 @@ void SystemOptionsHandler::GetLocalizedValues(
       l10n_util::GetStringUTF16(
           IDS_OPTIONS_SETTINGS_ACCESSIBILITY_DESCRIPTION));
 
+  // TODO(pastarmovj): replace this with a call to the CrosSettings list
+  // handling functionality to come.

[Mattias Nissler (ping if slow), 2011/09/26 17:26:37]

haven't you included that list handling already now?

[pastarmovj, 2011/09/29 15:15:03]

I'd rather fix this in a separate CL.

   localized_strings->Set("timezoneList",
-      reinterpret_cast<chromeos::SystemSettingsProvider*>(
-          settings_provider_.get())->GetTimezoneList());
+      static_cast<chromeos::SystemSettingsProvider*>(
+          chromeos::CrosSettings::Get()->GetProvider(
+              chromeos::kSystemTimezone))->GetTimezoneList());
 }
 
 void SystemOptionsHandler::Initialize() {