bool operator()(const syncer::Invalidation& a,
const syncer::Invalidation& b) const;
};
typedef std::set<invalidation::ObjectId, ObjectIdLessThan> ObjectIdSet;
bool operator()(const syncer::Invalidation& a,
const syncer::Invalidation& b) const;
};
typedef std::set<invalidation::ObjectId, ObjectIdLessThan> ObjectIdSet;