Make payment manifest download/parse cross-platform

components/payments/content/android/utility/payment_manifest_parser.h

-// Copyright 2017 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.
-
-#ifndef COMPONENTS_PAYMENTS_CONTENT_ANDROID_UTILITY_PAYMENT_MANIFEST_PARSER_H_
-#define COMPONENTS_PAYMENTS_CONTENT_ANDROID_UTILITY_PAYMENT_MANIFEST_PARSER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "components/payments/content/android/payment_manifest_parser.mojom.h"
-
-namespace payments {
-
-// Parser for payment manifests. Should be used only in a utility process.
-//
-// Example valid manifest structure:
-//
-// {
-//   "android": [{
-//     "package": "com.bobpay.app",
-//     "version": 1,
-//     "sha256_cert_fingerprints": ["12:34:56:78:90:AB:CD:EF"]
-//   }]
-// }
-//
-// Spec:
-// https://docs.google.com/document/d/1izV4uC-tiRJG3JLooqY3YRLU22tYOsLTNq0P_InPJeE/edit#heading=h.cjp3jlnl47h5
-class PaymentManifestParser : public mojom::PaymentManifestParser {
- public:
-  static void Create(mojom::PaymentManifestParserRequest request);
-
-  // The return value is move-only, so no copying occurs.
-  static std::vector<mojom::PaymentManifestSectionPtr> ParseIntoVector(
-      const std::string& input);
-
-  PaymentManifestParser();
-  ~PaymentManifestParser() override;
-
-  // mojom::PaymentManifestParser
-  void Parse(const std::string& content,
-             const ParseCallback& callback) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(PaymentManifestParser);
-};
-
-}  // namespace payments
-
-#endif  // COMPONENTS_PAYMENTS_CONTENT_ANDROID_UTILITY_PAYMENT_MANIFEST_PARSER_H_