Implement PaymentRequestUpdateEvent

chrome/test/data/android/payments/payment_request_need_address_test.html

Index: chrome/test/data/android/payments/payment_request_need_address_test.html
diff --git a/chrome/test/data/android/payments/payment_request_free_shipping_test.html b/chrome/test/data/android/payments/payment_request_need_address_test.html
similarity index 75%
copy from chrome/test/data/android/payments/payment_request_free_shipping_test.html
copy to chrome/test/data/android/payments/payment_request_need_address_test.html
index a7ca1fb5e025cc6a335775079b14240db5a1e803..6d1b7d563a7c5b5fa3be6bd239937ec52cac989c 100644
--- a/chrome/test/data/android/payments/payment_request_free_shipping_test.html
+++ b/chrome/test/data/android/payments/payment_request_need_address_test.html
@@ -25,19 +25,25 @@ function toDictionary(addr) {
 }
 function buy() {
   try {
-    var request = new PaymentRequest(['visa'], {
+    var details = {
       'items' : [ {
         'id' : 'total',
         'label' : 'Total',
         'amount' : {'currencyCode' : 'USD', 'value' : '5.00'}
-      } ],
-      'shippingOptions' : [ {
-        'id' : 'freeShippingOption',
-        'label' : 'Free global shipping',
-        'amount' : {'currencyCode' : 'USD', 'value' : '0'}
       } ]
-    },
-                                     {'requestShipping' : true});
+    };
+    var request =
+        new PaymentRequest(['visa'], details, {'requestShipping' : true});
+    request.addEventListener("shippingaddresschange", function(e) {
+      e.updateWith(new Promise(function(resolve, reject) {
+        details['shippingOptions'] = [ {
+          'id' : 'calculatedShippingOption',
+          'label' : 'Standard shipping',
+          'amount' : {'currencyCode' : 'USD', 'value' : '1.00'}
+        } ];
+        resolve(details);
+      }));
+    });
     request.show()
         .then(function(resp) {
           resp.complete(true)