RenderFrameImpl::~RenderFrameImpl() {
  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, RenderFrameGone());
  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, OnDestruct());
  RenderThread::Get()->RemoveRoute(routing_id_);
}

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.