VR HWC: Relax checks around layer presentation

      queued_client_target = true;

    } else {

      if (!layer.info.buffer.get() || !layer.info.fence.get()) {

        ALOGE("Layer requested without valid buffer");

        return Error::BAD_LAYER;

        ALOGV("Layer requested without valid buffer");

        continue;

      }

      frame.push_back(layer.info);

    }

  }

  if (frame.empty()) {

    ALOGE("Requested frame with no layers");

    return Error::BAD_LAYER;

  }

  out_frames->swap(frame);

  return Error::NONE;

}