Merge pull request #2644 from crackalak/feature/shadowdom-aria

Added `ariaContainerElement` to shadow dom test

test/shadow-dom.html

@@ -49,7 +49,8 @@
 				'}',
 				''
 			].join('\n'),
-			language: 'javascript'
+			language: 'javascript',
+			ariaContainerElement: innerContainer
 		});
 	});
 </script>