Source

File: wp-admin/includes/class-wp-media-list-table.php

public function __construct( $args = array() ) {
		$this->detached = ( isset( $_REQUEST['attachment-filter'] ) && 'detached' === $_REQUEST['attachment-filter'] );

		$this->modes = array(
			'list' => __( 'List view' ),
			'grid' => __( 'Grid view' ),
		);

		parent::__construct(
			array(
				'plural' => 'media',
				'screen' => isset( $args['screen'] ) ? $args['screen'] : null,
			)
		);
	}