Prevent usage of web payments API over insecure HTTPS.

chrome/browser/ui/views/payments/payment_request_payment_app_browsertest.cc

+// 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.
+
+#include "base/macros.h"
+#include "chrome/browser/ui/views/payments/payment_request_browsertest_base.h"
+#include "content/public/test/browser_test.h"
+#include "content/public/test/browser_test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace payments {
+
+class PaymentRequestPaymentAppTest : public PaymentRequestBrowserTestBase {
+ protected:
+  PaymentRequestPaymentAppTest()
+      : PaymentRequestBrowserTestBase("/payment_request_bobpay_test.html") {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PaymentRequestPaymentAppTest);
+};
+
+IN_PROC_BROWSER_TEST_F(PaymentRequestPaymentAppTest, ShowNotSupportedError) {
+  ResetEventObserver(DialogEvent::NOT_SUPPORTED_ERROR);
+  ASSERT_TRUE(content::ExecuteScript(GetActiveWebContents(), "buy();"));
+  WaitForObservedEvent();
+  ExpectBodyContains({"NotSupportedError"});
+}
+
+}  // namespace payments