int32_t PepperFlashRendererHost::OnSetInstanceAlwaysOnTop(
    ppapi::host::HostMessageContext* host_context,
    bool on_top) {
  content::PepperPluginInstance* plugin_instance =
      host_->GetPluginInstance(pp_instance());
  if (plugin_instance)
    plugin_instance->SetAlwaysOnTop(on_top);
  return PP_OK;
}

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.