PaymentRequest: Introduce PaymentMethodData.

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 */
 
 /**
@@ skipping 10 matching lines @@
           amount: {currency: 'USD', value: '5.00'}
         },
         {
           id: 'total',
           label: 'Total',
           amount: {currency: 'USD', value: '5.00'}
         }
       ]
     };
 
-    var request =
-        new PaymentRequest(['visa'], details, {requestShipping: true});
+    var request = new PaymentRequest(
+        [{supportedMethods: ['visa']}], details, {requestShipping: true});
 
     request.addEventListener('shippingaddresschange', function(evt) {
       evt.updateWith(new Promise(function(resolve) {
         resolve(updateDetails(details, request.shippingAddress));
       }));
     });
 
     request.show()
         .then(function(resp) {
           resp.complete(true)
@@ skipping 45 matching lines @@
       details.items.splice(-1, 0, shippingOption);
     } else {
       details.items.splice(-2, 1, shippingOption);
     }
     details.shippingOptions = [shippingOption];
   } else {
     delete details.shippingOptions;
   }
   return details;
 }