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

components/sync/core/read_transaction.cc

-// Copyright 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/core/read_transaction.h"
-
-#include "components/sync/syncable/directory.h"
-#include "components/sync/syncable/syncable_read_transaction.h"
-
-namespace syncer {
-
-//////////////////////////////////////////////////////////////////////////
-// ReadTransaction member definitions
-ReadTransaction::ReadTransaction(const tracked_objects::Location& from_here,
-                                 UserShare* share)
-    : BaseTransaction(share), transaction_(NULL), close_transaction_(true) {
-  transaction_ =
-      new syncable::ReadTransaction(from_here, share->directory.get());
-}
-
-ReadTransaction::ReadTransaction(UserShare* share,
-                                 syncable::BaseTransaction* trans)
-    : BaseTransaction(share), transaction_(trans), close_transaction_(false) {}
-
-ReadTransaction::~ReadTransaction() {
-  if (close_transaction_) {
-    delete transaction_;
-  }
-}
-
-syncable::BaseTransaction* ReadTransaction::GetWrappedTrans() const {
-  return transaction_;
-}
-
-int64_t ReadTransaction::GetModelVersion(ModelType type) const {
-  return transaction_->directory()->GetTransactionVersion(type);
-}
-
-void ReadTransaction::GetDataTypeContext(
-    ModelType type,
-    sync_pb::DataTypeContext* context) const {
-  return transaction_->directory()->GetDataTypeContext(transaction_, type,
-                                                       context);
-}
-
-void ReadTransaction::GetAttachmentIdsToUpload(ModelType type,
-                                               AttachmentIdList* ids) const {
-  DCHECK(ids);
-  transaction_->directory()->GetAttachmentIdsToUpload(transaction_, type, ids);
-}
-
-std::string ReadTransaction::GetStoreBirthday() const {
-  return transaction_->directory()->store_birthday();
-}
-
-}  // namespace syncer