PaymentApp: Introduce PaymentAppDatabase class.

content/browser/payments/payment_app_database.h

+// 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.
+
+#ifndef CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_DATABASE_H_
+#define CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_DATABASE_H_
+
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "components/payments/payment_app.mojom.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
+#include "content/browser/service_worker/service_worker_registration.h"
+#include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_status_code.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace content {
+
+class ServiceWorkerRegistration;
+
+class CONTENT_EXPORT PaymentAppDatabase {
+ public:
+  using WriteManifestCallback =
+      base::Callback<void(payments::mojom::PaymentAppManifestError)>;
+  using ReadManifestCallback =
+      base::Callback<void(payments::mojom::PaymentAppManifestPtr,
+                          payments::mojom::PaymentAppManifestError)>;
+
+  explicit PaymentAppDatabase(
+      scoped_refptr<ServiceWorkerContextWrapper> service_worker_context);
+  ~PaymentAppDatabase();
+
+  void WriteManifest(const std::string& scope,

[please use gerrit instead, 2016/12/09 21:58:47]

Can we use GURL for scope?

[zino, 2016/12/09 22:30:16]

Done.

+                     payments::mojom::PaymentAppManifestPtr manifest,
+                     const WriteManifestCallback& callback);
+  void ReadManifest(const std::string& scope,
+                    const ReadManifestCallback& callback);
+
+ private:
+  // WriteManifest callbacks
+  void DidFindRegistrationToWriteManifest(
+      payments::mojom::PaymentAppManifestPtr manifest,
+      const WriteManifestCallback& callback,
+      ServiceWorkerStatusCode status,
+      scoped_refptr<ServiceWorkerRegistration> registration);
+  void DidWriteManifest(const WriteManifestCallback& callback,
+                        ServiceWorkerStatusCode status);
+
+  // ReadManifest callbacks
+  void DidFindRegistrationToReadManifest(
+      const ReadManifestCallback& callback,
+      ServiceWorkerStatusCode status,
+      scoped_refptr<ServiceWorkerRegistration> registration);
+  void DidReadManifest(const ReadManifestCallback& callback,
+                       const std::vector<std::string>& data,
+                       ServiceWorkerStatusCode status);
+
+  scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
+  base::WeakPtrFactory<PaymentAppDatabase> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(PaymentAppDatabase);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_DATABASE_H_