Index: wp-admin/includes/class-wp-media-list-table.php
===================================================================
--- wp-admin/includes/class-wp-media-list-table.php	(revision 39147)
+++ wp-admin/includes/class-wp-media-list-table.php	(working copy)
@@ -172,7 +172,7 @@
 			}
 
 			/** This action is documented in wp-admin/includes/class-wp-posts-list-table.php */
-			do_action( 'restrict_manage_posts', $this->screen->post_type );
+			do_action( 'restrict_manage_posts', $this->screen->post_type, $which );
 
 			submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'post-query-submit' ) );
 		}