[Payments] Move Payment Request test files to chrome/test/data/payments

chrome/test/data/android/payments/fail_complete.js

-/*
- * Copyright 2016 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.
- */
-
-/* global PaymentRequest:false */
-
-/**
- * Launches the PaymentRequest UI and always fails to complete the transaction.
- */
-function buy() {  // eslint-disable-line no-unused-vars
-  try {
-    new PaymentRequest(
-        [{supportedMethods: ['visa']}],
-        {total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}}})
-        .show()
-        .then(function(resp) {
-          resp.complete('fail')
-              .then(function() {
-                print('Transaction failed');
-              })
-              .catch(function(error) {
-                print(error.message);
-              });
-        })
-        .catch(function(error) {
-          print(error.message);
-        });
-  } catch (error) {
-    print(error.message);
-  }
-}