Index: wp-admin/includes/class-wp-media-list-table.php
===================================================================
--- wp-admin/includes/class-wp-media-list-table.php	(revision 37189)
+++ wp-admin/includes/class-wp-media-list-table.php	(working copy)
@@ -505,7 +505,7 @@
 			<?php if ( $user_can_edit ) {
 				$title = _draft_or_post_title( $post->post_parent );
 				printf(
-					'<a href="#the-list" onclick="findPosts.open( \'media[]\', \'%s\' ); return false;" class="hide-if-no-js" aria-label="%s">%s</a>',
+					'<a href="#the-list" onclick="findPosts.open( \'media[]\', \'%s\' ); return false;" class="hide-if-no-js aria-button-if-js" aria-label="%s">%s</a>',
 					$post->ID,
 					/* translators: %s: attachment title */
 					esc_attr( sprintf( __( 'Attach &#8220;%s&#8221; to existing content' ), $title ) ),
@@ -657,7 +657,7 @@
 			if ( current_user_can( 'delete_post', $post->ID ) ) {
 				if ( EMPTY_TRASH_DAYS && MEDIA_TRASH ) {
 					$actions['trash'] = sprintf(
-						'<a href="%s" class="submitdelete" aria-label="%s">%s</a>',
+						'<a href="%s" class="submitdelete aria-button-if-js" aria-label="%s">%s</a>',
 						wp_nonce_url( "post.php?action=trash&amp;post=$post->ID", 'trash-post_' . $post->ID ),
 						/* translators: %s: attachment title */
 						esc_attr( sprintf( __( 'Move &#8220;%s&#8221; to the Trash' ), $att_title ) ),
@@ -666,7 +666,7 @@
 				} else {
 					$delete_ays = ! MEDIA_TRASH ? " onclick='return showNotice.warn();'" : '';
 					$actions['delete'] = sprintf(
-						'<a href="%s" class="submitdelete"%s aria-label="%s">%s</a>',
+						'<a href="%s" class="submitdelete aria-button-if-js"%s aria-label="%s">%s</a>',
 						wp_nonce_url( "post.php?action=delete&amp;post=$post->ID", 'delete-post_' . $post->ID ),
 						$delete_ays,
 						/* translators: %s: attachment title */
@@ -685,7 +685,7 @@
 
 			if ( current_user_can( 'edit_post', $post->ID ) ) {
 				$actions['attach'] = sprintf(
-					'<a href="#the-list" onclick="findPosts.open( \'media[]\', \'%s\' ); return false;" class="hide-if-no-js" aria-label="%s">%s</a>',
+					'<a href="#the-list" onclick="findPosts.open( \'media[]\', \'%s\' ); return false;" class="hide-if-no-js aria-button-if-js" aria-label="%s">%s</a>',
 					$post->ID,
 					/* translators: %s: attachment title */
 					esc_attr( sprintf( __( 'Attach &#8220;%s&#8221; to existing content' ), $att_title ) ),
@@ -706,7 +706,7 @@
 			if ( current_user_can( 'delete_post', $post->ID ) ) {
 				if ( $this->is_trash ) {
 					$actions['untrash'] = sprintf(
-						'<a href="%s" class="submitdelete" aria-label="%s">%s</a>',
+						'<a href="%s" class="submitdelete aria-button-if-js" aria-label="%s">%s</a>',
 						wp_nonce_url( "post.php?action=untrash&amp;post=$post->ID", 'untrash-post_' . $post->ID ),
 						/* translators: %s: attachment title */
 						esc_attr( sprintf( __( 'Restore &#8220;%s&#8221; from the Trash' ), $att_title ) ),
@@ -714,7 +714,7 @@
 					);
 				} elseif ( EMPTY_TRASH_DAYS && MEDIA_TRASH ) {
 					$actions['trash'] = sprintf(
-						'<a href="%s" class="submitdelete" aria-label="%s">%s</a>',
+						'<a href="%s" class="submitdelete aria-button-if-js" aria-label="%s">%s</a>',
 						wp_nonce_url( "post.php?action=trash&amp;post=$post->ID", 'trash-post_' . $post->ID ),
 						/* translators: %s: attachment title */
 						esc_attr( sprintf( __( 'Move &#8220;%s&#8221; to the Trash' ), $att_title ) ),
@@ -724,7 +724,7 @@
 				if ( $this->is_trash || ! EMPTY_TRASH_DAYS || ! MEDIA_TRASH ) {
 					$delete_ays = ( !$this->is_trash && !MEDIA_TRASH ) ? " onclick='return showNotice.warn();'" : '';
 					$actions['delete'] = sprintf(
-						'<a href="%s" class="submitdelete"%s aria-label="%s">%s</a>',
+						'<a href="%s" class="submitdelete aria-button-if-js"%s aria-label="%s">%s</a>',
 						wp_nonce_url( "post.php?action=delete&amp;post=$post->ID", 'delete-post_' . $post->ID ),
 						$delete_ays,
 						/* translators: %s: attachment title */