Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/extension_sync_service_factory.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_sync_service_factory.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/extensions/extension_sync_service.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
 #include "extensions/browser/extension_prefs_factory.h"
+#include "extensions/browser/extension_system.h"
 
 // static
 ExtensionSyncService* ExtensionSyncServiceFactory::GetForProfile(
     Profile* profile) {
   return static_cast<ExtensionSyncService*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 ExtensionSyncServiceFactory* ExtensionSyncServiceFactory::GetInstance() {
@@ skipping 10 matching lines @@
 
 ExtensionSyncServiceFactory::~ExtensionSyncServiceFactory() {}
 
 BrowserContextKeyedService*
     ExtensionSyncServiceFactory::BuildServiceInstanceFor(
         content::BrowserContext* context) const {
   Profile* profile = Profile::FromBrowserContext(context);
   return new ExtensionSyncService(
       profile,
       extensions::ExtensionPrefsFactory::GetForBrowserContext(context),
-      extensions::ExtensionSystemFactory::GetForProfile(profile)->
-          extension_service());
+      extensions::ExtensionSystem::Get(profile)->extension_service());
 }
 
 content::BrowserContext* ExtensionSyncServiceFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }