PaymentHandler: Should not allow accessing PaymentManager in Extension.

chrome/test/data/extensions/api_test/service_worker/payments/page.js

Index: chrome/test/data/extensions/api_test/service_worker/payments/page.js
diff --git a/chrome/test/data/extensions/api_test/service_worker/payments/page.js b/chrome/test/data/extensions/api_test/service_worker/payments/page.js
new file mode 100644
index 0000000000000000000000000000000000000000..01304f3b166e4b3b6760e3da9b13e39e5045be94
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/service_worker/payments/page.js
@@ -0,0 +1,15 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+window.runServiceWorker = function() {
+  navigator.serviceWorker.register('sw.js').then(function() {
+    return navigator.serviceWorker.ready;
+  }).then(function(registration) {
+    return registration.paymentManager;
+  }).then(function(paymentManager) {
+    window.domAutomationController.send(paymentManager);
+  }).catch(function(error) {
+    window.domAutomationController.send(error.name);
+  });
+};