Layered component for web payments

components/payments/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/payment_request.mojom";
-import "url/mojo/url.mojom";
-
-enum PaymentAppManifestError {
-  NONE,
-  NOT_IMPLEMENTED,
-  NO_ACTIVE_WORKER,
-  MANIFEST_STORAGE_OPERATION_FAILED,
-};
-
-struct PaymentAppOption {
-  string name;
-  string? icon;
-  string id;
-  array<string> enabled_methods;
-};
-
-struct PaymentAppManifest {
-  string name;
-  string? icon;
-  array<PaymentAppOption> options;
-};
-
-interface PaymentAppManager {
-  Init(string service_worker_scope);
-  SetManifest(PaymentAppManifest payment_app_manifest)
-      => (PaymentAppManifestError error);
-  GetManifest()
-      => (PaymentAppManifest payment_app_manifest, PaymentAppManifestError error);
-};
-
-struct PaymentAppRequest {
-  url.mojom.Url origin;
-  array<PaymentMethodData> methodData;
-  PaymentItem total;
-  array<PaymentDetailsModifier> modifiers;
-  string optionId;
-};