bool
PluginWidgetChild::RecvSetScrollCaptureId(const uint64_t& aScrollCaptureId,
                                          const uintptr_t& aPluginInstanceId)
{
#if defined(XP_WIN)
  PluginInstanceParent* instance =
    PluginInstanceParent::LookupPluginInstanceByID(aPluginInstanceId);
  if (instance) {
    NS_WARN_IF(NS_FAILED(instance->SetScrollCaptureId(aScrollCaptureId)));
  }

  return true;
#else
  MOZ_ASSERT_UNREACHABLE(
    "PluginWidgetChild::RecvSetScrollCaptureId calls not expected.");
  return false;
#endif
}