[Sync] Move some directory-related things from core/ to syncable/.

components/sync/driver/backend_migrator.cc

 // Copyright (c) 2012 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 "components/sync/driver/backend_migrator.h"
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/tracked_objects.h"
 #include "components/sync/core/configure_reason.h"
-#include "components/sync/core/read_transaction.h"
 #include "components/sync/driver/sync_service.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "components/sync/syncable/directory.h"
+#include "components/sync/syncable/read_transaction.h"
 
 namespace syncer {
 
 MigrationObserver::~MigrationObserver() {}
 
 BackendMigrator::BackendMigrator(const std::string& name,
                                  UserShare* user_share,
                                  SyncService* service,
                                  DataTypeManager* manager,
                                  const base::Closure& migration_done_callback)
@@ skipping 182 matching lines @@
 
 ModelTypeSet BackendMigrator::GetPendingMigrationTypesForTest() const {
   return to_migrate_;
 }
 
 #undef SDVLOG
 
 #undef SLOG
 
 };  // namespace syncer