[Payments] Add CanMakePayment metrics.

chrome/test/data/payments/can_make_payment_metrics.js

+/*
+ * 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.
+ */
+
+/* global PaymentRequest:false */
+/* global print:false */
+
+/**
+ * Do not query CanMakePayment before showing the Payment Request.
+ */
+function noQueryShow() {  // eslint-disable-line no-unused-vars
+  try {
+    var request = new PaymentRequest(
+        [{supportedMethods: ['https://bobpay.com', 'visa']}],
+        {total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}}});
+    request.show()
+        .then(function(resp) {
+          resp.complete('success')
+              .then(function() {
+                print(
+                    resp.shippingOption + '<br>' +
+                    JSON.stringify(
+                        toDictionary(resp.shippingAddress), undefined, 2) +
+                    '<br>' + resp.methodName + '<br>' +
+                    JSON.stringify(resp.details, undefined, 2));
+              })
+              .catch(function(error) { print(error); });
+        })
+        .catch(function(error) { print(error); });
+  } catch (error) {
+    print(error.message);
+  }
+}
+
+/**
+ * Queries CanMakePayment and the shows the PaymentRequest after.
+ */
+function queryShow() {  // eslint-disable-line no-unused-vars
+  try {
+    var request = new PaymentRequest(
+        [{supportedMethods: ['https://bobpay.com', 'visa']}],
+        {total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}}});
+    request.canMakePayment()
+        .then(function(result) { print(result); })
+        .catch(function(error) { print(error); });
+    request.show()
+        .then(function(resp) {
+          resp.complete('success')
+              .then(function() {
+                print(
+                    resp.shippingOption + '<br>' +
+                    JSON.stringify(
+                        toDictionary(resp.shippingAddress), undefined, 2) +
+                    '<br>' + resp.methodName + '<br>' +
+                    JSON.stringify(resp.details, undefined, 2));
+              })
+              .catch(function(error) { print(error); });
+        })
+        .catch(function(error) { print(error); });
+  } catch (error) {
+    print(error.message);
+  }
+}
+
+/**
+ * Queries CanMakePayment but does not show the PaymentRequest after.
+ */
+function queryNoShow() {  // eslint-disable-line no-unused-vars
+  try {
+    var request = new PaymentRequest(
+        [{supportedMethods: ['https://bobpay.com', 'visa']}],
+        {total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}}});
+    request.canMakePayment()
+        .then(function(result) { print(result); })
+        .catch(function(error) { print(error); });
+  } catch (error) {
+    print(error.message);
+  }
+}