Index: sync/api/attachments/attachment_id.h |
diff --git a/sync/api/attachments/attachment_id.h b/sync/api/attachments/attachment_id.h |
index 1c53355f8c476acb2fd81267eedd378c7582c9ea..039d38684d9927a14a9d76513e5a76f7ccab4e3d 100644 |
--- a/sync/api/attachments/attachment_id.h |
+++ b/sync/api/attachments/attachment_id.h |
@@ -75,6 +75,8 @@ class SYNC_EXPORT AttachmentId { |
AttachmentId(sync_pb::AttachmentIdProto* proto); |
}; |
+// All public interfaces use AttachmentIdList. AttachmentIdSet is used in |
+// implementations of algorithms where set properties are needed. |
typedef std::vector<AttachmentId> AttachmentIdList; |
typedef std::set<AttachmentId> AttachmentIdSet; |