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

sync/internal_api/public/base/attachment_id_proto.h

-// 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.
-
-#ifndef SYNC_INTERNAL_API_PUBLIC_BASE_ATTACHMENT_ID_PROTO_H_
-#define SYNC_INTERNAL_API_PUBLIC_BASE_ATTACHMENT_ID_PROTO_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "sync/base/sync_export.h"
-#include "sync/protocol/sync.pb.h"
-
-namespace syncer {
-
-// Helper functions that are logically part of sync_pb::AttachmentIdProto.
-
-// Creates a unique AttachmentIdProto.
-//
-// |size| is the size in bytes of the attachment identified by this proto.
-//
-// |crc32c| is the crc32c of the attachment identified by this proto.
-SYNC_EXPORT sync_pb::AttachmentIdProto CreateAttachmentIdProto(size_t size,
-                                                               uint32_t crc32c);
-
-// Creates an AttachmentMetadata object from a repeated field of
-// AttachmentIdProto objects.
-//
-// Note: each record in the AttachmentMetadata will be marked as "on the
-// server".
-SYNC_EXPORT sync_pb::AttachmentMetadata CreateAttachmentMetadata(
-    const google::protobuf::RepeatedPtrField<sync_pb::AttachmentIdProto>& ids);
-
-}  // namespace syncer
-
-#endif  // SYNC_INTERNAL_API_PUBLIC_BASE_ATTACHMENT_ID_PROTO_H_