Implement request id in PaymentDetailsInit

components/payments/content/payment_request.mojom

 // 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.
 
 [JavaPackage="org.chromium.payments.mojom"]
 module payments.mojom;
 
 // The shipping address that the browser process provides to the renderer
 // process. Built either by the browser or a payment app.
 struct PaymentAddress {
@@ skipping 46 matching lines @@
   // Payment method specific JSON string that is built either by the browser or
   // a payment app, for example Android Pay. Browser ensures that the string can
   // be successfully parsed into base::JSONParser. Renderer parses this string
   // via v8::JSON::Parse() and hands off the result to the merchant website.
   // There's no one format for this object, so more specific types cannot be
   // used. A simple example:
   //
   // {"nameOnCard": "Jon Doe", "pan": "4111 1111 1111 1111"}
   string stringified_details;
 
+  string requestId;

[please use gerrit instead, 2017/03/27 16:22:36]

The string is never modified inside of the browser process, so no need to send
it back to the renderer process.

[rwlbuis, 2017/03/27 20:45:29]

Done.

   PaymentAddress? shipping_address;
   string? shipping_option;
   string? payer_name;
   string? payer_email;
   string? payer_phone;
 };
 
 enum PaymentErrorReason {
   UNKNOWN,
   USER_CANCEL,
@@ skipping 104 matching lines @@
   array<PaymentItem> additional_display_items;
   PaymentMethodData method_data;
 };
 
 struct PaymentDetails {
   PaymentItem total;
   array<PaymentItem> display_items;
   array<PaymentShippingOption> shipping_options;
   array<PaymentDetailsModifier> modifiers;
   string error = "";
+  string? id;

[please use gerrit instead, 2017/03/27 16:22:36]

Add a comment about where this string comes from and how it's going to be used.

[rwlbuis, 2017/03/27 20:45:29]

Done.

 };
 
 enum PaymentShippingType {
   SHIPPING,
   DELIVERY,
   PICKUP
 };
 
 struct PaymentOptions {
   bool request_payer_name;
@@ skipping 13 matching lines @@
   Init(PaymentRequestClient client,
        array<PaymentMethodData> method_data,
        PaymentDetails details,
        PaymentOptions options);
   Show();
   UpdateWith(PaymentDetails details);
   Abort();
   Complete(PaymentComplete result);
   CanMakePayment();
 };