PaymentHandler: Rename PaymentAppRequest with PaymentRequestEventData.

components/payments/mojom/payment_app.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.
 
 module payments.mojom;
 
 import "components/payments/mojom/payment_request.mojom";
 import "mojo/common/time.mojom";
 import "url/mojo/url.mojom";
 
@@ skipping 20 matching lines @@
   KeysOfPaymentInstruments()
       => (array<string> keys, PaymentHandlerStatus status);
   HasPaymentInstrument(string instrument_key)
       => (PaymentHandlerStatus status);
   SetPaymentInstrument(string instrument_key, PaymentInstrument instrument)
       => (PaymentHandlerStatus status);
   ClearPaymentInstruments()
       => (PaymentHandlerStatus status);
 };
 
-struct PaymentAppRequest {
+struct PaymentRequestEventData {
   url.mojom.Url top_level_origin;
   url.mojom.Url payment_request_origin;
   string payment_request_id;
   array<PaymentMethodData> method_data;
   PaymentItem total;
   array<PaymentDetailsModifier> modifiers;
   string instrument_key;
 };
 
 struct PaymentAppResponse {
   string method_name;
   string stringified_details;
 };
 
 // This interface is provided to pass a payment app response from payment
 // request event in renderer side to browser side by calling respondWith().
 interface PaymentAppResponseCallback {
   OnPaymentAppResponse(PaymentAppResponse response,
                        mojo.common.mojom.Time dispatch_event_time);
 };