Add ExtensionSytem::Get(Profile*) as a wrapper around

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 84ecbd8772c946a82e33a5880c4c8df3062e18b8..ecef8743fc1faa6bb3727d542ee959ef47fa9e9f 100644
--- a/chrome/browser/profiles/profile_manager.cc
+++ b/chrome/browser/profiles/profile_manager.cc
@@ -19,7 +19,6 @@
 #include "chrome/browser/extensions/default_apps_trial.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
-#include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/managed_mode.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
@@ -641,7 +640,7 @@ void ProfileManager::DoFinalInit(Profile* profile, bool go_off_the_record) {
 void ProfileManager::DoFinalInitForServices(Profile* profile,
                                             bool go_off_the_record) {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-  ExtensionSystemFactory::GetForProfile(profile)->Init(!go_off_the_record);
+  ExtensionSystem::Get(profile)->Init(!go_off_the_record);
   if (!command_line.HasSwitch(switches::kDisableWebResources))
     profile->InitPromoResources();
 }