Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/profiles/profile_manager.cc

Index: chrome/browser/profiles/profile_manager.cc
diff --git a/chrome/browser/profiles/profile_manager.cc b/chrome/browser/profiles/profile_manager.cc
index e766c539750a2f13e54482c26b1f9e7767f30360..056d733cde8c9eca7fa5468151f48e3d49910259 100644
--- a/chrome/browser/profiles/profile_manager.cc
+++ b/chrome/browser/profiles/profile_manager.cc
@@ -17,6 +17,7 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/managed_mode/managed_mode.h"
+#include "chrome/browser/prefs/pref_registrar_simple.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile_destroyer.h"
@@ -59,9 +60,9 @@
 #endif
 
 #if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/login/user_manager.h"
 #include "chromeos/dbus/cryptohome_client.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
-#include "chrome/browser/chromeos/login/user_manager.h"
 #endif
 
 using content::BrowserThread;
@@ -829,7 +830,7 @@ void ProfileManager::CreateMultiProfileAsync(
 }
 
 // static
-void ProfileManager::RegisterPrefs(PrefServiceSimple* prefs) {
+void ProfileManager::RegisterPrefs(PrefRegistrarSimple* prefs) {
   prefs->RegisterStringPref(prefs::kProfileLastUsed, "");
   prefs->RegisterIntegerPref(prefs::kProfilesNumCreated, 1);
   prefs->RegisterListPref(prefs::kProfilesLastActive);