refactor: add license header to JS files & format files (#12081)

modules/angular1_router/test/integration/router_spec.js

@@ -1,3 +1,11 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
 'use strict';
 
 describe('router', function () {