Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/policy/device_status_collector.cc

Index: chrome/browser/policy/device_status_collector.cc
diff --git a/chrome/browser/policy/device_status_collector.cc b/chrome/browser/policy/device_status_collector.cc
index 1917d0741dc0477c95350c1a944b5ee98194c713..4776b0427097295910ab098ed7742582f3c72c94 100644
--- a/chrome/browser/policy/device_status_collector.cc
+++ b/chrome/browser/policy/device_status_collector.cc
@@ -17,6 +17,7 @@
 #include "chrome/browser/chromeos/settings/cros_settings_names.h"
 #include "chrome/browser/chromeos/system/statistics_provider.h"
 #include "chrome/browser/policy/proto/device_management_backend.pb.h"
+#include "chrome/browser/prefs/pref_registry_simple.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/common/chrome_notification_types.h"
@@ -152,11 +153,11 @@ DeviceStatusCollector::~DeviceStatusCollector() {
 }
 
 // static
-void DeviceStatusCollector::RegisterPrefs(PrefServiceSimple* local_state) {
-  local_state->RegisterDictionaryPref(prefs::kDeviceActivityTimes,
-                                      new base::DictionaryValue);
-  local_state->RegisterDictionaryPref(prefs::kDeviceLocation,
-                                      new base::DictionaryValue);
+void DeviceStatusCollector::RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterDictionaryPref(prefs::kDeviceActivityTimes,
+                                   new base::DictionaryValue);
+  registry->RegisterDictionaryPref(prefs::kDeviceLocation,
+                                   new base::DictionaryValue);
 }
 
 void DeviceStatusCollector::CheckIdleState() {