Grid.php

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<?php
namespace Magento\Newsletter\Block\Adminhtml\Subscriber;

class Grid extends \Magento\Backend\Block\Widget\Grid
{
    protected $_queueFactory;

    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Backend\Helper\Data $backendHelper,
        \Magento\Newsletter\Model\QueueFactory $queueFactory,
        array $data = []
    ) {
        $this->_queueFactory = $queueFactory;
        parent::__construct($context, $backendHelper, $data);
    }

    protected function _prepareCollection()
    {
        if ($this->getRequest()->getParam('queue', false)) {
            $this->getCollection()->useQueue(
                $this->_queueFactory->create()->load($this->getRequest()->getParam('queue'))
            );
        }

        return parent::_prepareCollection();
    }
}