[Sync] Move //sync to //components/sync.

sync/syncable/syncable_proto_util.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 "sync/syncable/syncable_proto_util.h"
-
-#include "sync/protocol/sync.pb.h"
-
-namespace syncer {
-
-syncable::Id SyncableIdFromProto(const std::string& proto_string) {
-  return syncable::Id::CreateFromServerId(proto_string);
-}
-
-std::string SyncableIdToProto(const syncable::Id& syncable_id) {
-  return syncable_id.GetServerId();
-}
-
-bool IsFolder(const sync_pb::SyncEntity& entity) {
-  // TODO(sync): The checks for has_folder() and has_bookmarkdata() are likely
-  // no longer necessary.  We should remove them if we can convince ourselves
-  // that doing so won't break anything.
-  return ((entity.has_folder() && entity.folder()) ||
-          (entity.has_bookmarkdata() &&
-           entity.bookmarkdata().bookmark_folder()));
-}
-
-bool IsRoot(const sync_pb::SyncEntity& entity) {
-  return SyncableIdFromProto(entity.id_string()).IsRoot();
-}
-
-}  // namespace syncer