Add 'total' field to 'PaymentDetails'.

chrome/test/data/android/payments/dynamic_shipping.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 */
 /* global toDictionary:false */
 
 /**
  * Launches the PaymentRequest UI that offers free shipping in California and
  * $5.00 shipping in US. Does not allow shipping outside of US.
  */
 function buy() {  // eslint-disable-line no-unused-vars
   try {
     var details = {
-      displayItems: [
-        {
-          id: 'sub',
-          label: 'Subtotal',
-          amount: {currency: 'USD', value: '5.00'}
-        },
-        {
-          id: 'total',
-          label: 'Total',
-          amount: {currency: 'USD', value: '5.00'}
-        }
-      ]
+      total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}},
+      displayItems:
+          [{label: 'Subtotal', amount: {currency: 'USD', value: '5.00'}}]
     };
 
     var request =
         new PaymentRequest(['visa'], details, {requestShipping: true});
 
     request.addEventListener('shippingaddresschange', function(evt) {
       evt.updateWith(new Promise(function(resolve) {
         resolve(updateDetails(details, request.shippingAddress));
       }));
     });
@@ skipping 30 matching lines @@
 function updateDetails(details, addr) {
   if (addr.regionCode === 'US') {
     var shippingOption = {
       id: '',
       label: '',
       amount: {currency: 'USD', value: '0.00'}
     };
     if (addr.administrativeArea === 'CA') {
       shippingOption.id = 'ca';
       shippingOption.label = 'Free shipping in California';
-      details.displayItems[details.displayItems.length - 1].amount.value =
-          '5.00';
+      details.total.amount.value = '5.00';
     } else {
       shippingOption.id = 'us';
       shippingOption.label = 'Standard shipping in US';
       shippingOption.amount.value = '5.00';
-      details.items[details.items.length - 1].amount.value = '10.00';
+      details.total.amount.value = '10.00';
     }
-    if (details.items.length === 3) {
-      details.items.splice(-1, 0, shippingOption);
+    if (details.displayItems.length === 1) {
+      details.displayItems.splice(0, 0, shippingOption);
     } else {
-      details.items.splice(-2, 1, shippingOption);
+      details.displayItems.splice(0, 1, shippingOption);
     }
     details.shippingOptions = [shippingOption];
   } else {
     delete details.shippingOptions;
   }
   return details;
 }