Add a11ySuite to the web component tester externs.
@@ -47,3 +47,9 @@ var stub = function(tag, impl) {};
* @return {!Element}
*/
var fixture = function(name, opt_model) {};
+
+/**
+ * @param {string} fixtureId
+ * @param {!Array<string>=} ignoredRules
+ */
+var a11ySuite = function(fixtureId, ignoredRules) {};
