Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

apps/saved_files_service.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 "apps/saved_files_service.h"
 
 #include <algorithm>
 
 #include "apps/saved_files_service_factory.h"
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/value_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/notification_service.h"
 #include "extensions/browser/extension_prefs.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/permission_set.h"
 
 namespace apps {
 
 using extensions::APIPermission;
 using extensions::Extension;
 using extensions::ExtensionHost;
 using extensions::ExtensionPrefs;
 
@@ skipping 420 matching lines @@
 void SavedFilesService::SetLruSizeForTest(int size) {
   g_max_saved_file_entries = size;
 }
 
 // static
 void SavedFilesService::ClearLruSizeForTest() {
   g_max_saved_file_entries = kMaxSavedFileEntries;
 }
 
 }  // namespace apps