Add Polymer 1.0 externs for compiling app-route.
@@ -735,6 +735,12 @@ PolymerElement.prototype._pathEffector = function(path, value) {};
*/
PolymerElement.prototype._propertySetter = function(path, value) {};
+/**
+ * Do not call this function.
+ *
+ * @param {string} path .
+ */
+PolymerElement.prototype._notifyChange = function(path) {};
/**
* A Polymer DOM API for manipulating DOM such that local DOM and light DOM
