[Sync] Add size and crc32c to AttachmentId.

sync/api/attachments/attachment_id.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/api/attachments/attachment_id.h"
 
 #include "base/logging.h"
 #include "sync/internal_api/public/base/attachment_id_proto.h"
 #include "sync/protocol/sync.pb.h"
 
@@ skipping 34 matching lines @@
 
 bool AttachmentId::operator!=(const AttachmentId& other) const {
   return !operator==(other);
 }
 
 bool AttachmentId::operator<(const AttachmentId& other) const {
   return proto_.Get().unique_id() < other.proto_.Get().unique_id();
 }
 
 // Static.
-AttachmentId AttachmentId::Create() {
-  sync_pb::AttachmentIdProto proto = CreateAttachmentIdProto();
+AttachmentId AttachmentId::Create(size_t size, uint32_t crc32c) {
+  sync_pb::AttachmentIdProto proto = CreateAttachmentIdProto(size, crc32c);
   return AttachmentId(&proto);
 }
 
 // Static.
 AttachmentId AttachmentId::CreateFromProto(
     const sync_pb::AttachmentIdProto& proto) {
   sync_pb::AttachmentIdProto copy_of_proto(proto);
   return AttachmentId(&copy_of_proto);
 }
 
 const sync_pb::AttachmentIdProto& AttachmentId::GetProto() const {
   return proto_.Get();
 }
 
 AttachmentId::AttachmentId(sync_pb::AttachmentIdProto* proto)
     : proto_(proto) {}
 
+size_t AttachmentId::GetSize() const {
+  return proto_.Get().size_bytes();
+}
+
+uint32_t AttachmentId::GetCrc32c() const {
+  return proto_.Get().crc32c();
+}
+
 }  // namespace syncer