[Payments] Implement web payment app manifest

content/public/browser/stored_payment_app.h

Index: content/public/browser/stored_payment_app.h
diff --git a/content/public/browser/stored_payment_app.h b/content/public/browser/stored_payment_app.h
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+// 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 CONTENT_PUBLIC_BROWSER_STORED_PAYMENT_APP_H_
+#define CONTENT_PUBLIC_BROWSER_STORED_PAYMENT_APP_H_
+
+#include <stdint.h>
+#include <string>
+#include <vector>
+
+#include "content/common/content_export.h"
+#include "content/public/browser/stored_payment_instrument.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "url/origin.h"
+
+namespace content {
+
+// This class represents the stored payment app.
+struct CONTENT_EXPORT StoredPaymentApp {
+  StoredPaymentApp();
+  ~StoredPaymentApp();
+
+  // Id of the service worker registration this app is associated with.
+  int64_t registration_id = 0;
+
+  // Origin of the payment app provider that provides this payment app.
+  url::Origin origin;
+
+  // Label for this payment app.
+  std::string name;
+
+  // Decoded icon for this payment app.
+  std::unique_ptr<SkBitmap> icon;
+
+  // A list of one or more payment instruments in this payment app.
+  std::vector<std::unique_ptr<StoredPaymentInstrument>> instruments;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_STORED_PAYMENT_APP_H_