sync: Add interfaces for per-type sync

sync/engine/get_updates_delegate.cc

 // Copyright 2014 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 "sync/engine/get_updates_delegate.h"
 
+#include "sync/engine/directory_update_handler.h"
 #include "sync/engine/get_updates_processor.h"
-#include "sync/engine/sync_directory_update_handler.h"
 
 namespace syncer {
 
 namespace {
 
 void NonPassiveApplyUpdates(
     sessions::StatusController* status_controller,
     UpdateHandlerMap* update_handler_map) {
   for (UpdateHandlerMap::iterator it = update_handler_map->begin();
        it != update_handler_map->end(); ++it) {
@@ skipping 127 matching lines @@
   get_updates->set_get_updates_origin(sync_pb::SyncEnums::PERIODIC);
 }
 
 void PollGetUpdatesDelegate::ApplyUpdates(
     sessions::StatusController* status_controller,
     UpdateHandlerMap* update_handler_map) const {
   NonPassiveApplyUpdates(status_controller, update_handler_map);
 }
 
 }  // namespace syncer