void TypedUrlModelAssociator::Disassociate(int64 sync_id) {
  DCHECK(expected_loop_ == MessageLoop::current());
  SyncIdToTypedUrlMap::iterator iter = id_map_inverse_.find(sync_id);
  if (iter == id_map_inverse_.end())
    return;
  CHECK(id_map_.erase(iter->second));
  id_map_inverse_.erase(iter);
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.