PaymentApp: Initial implementation for PaymentAppManager.setManifest().

content/browser/payments/payment_app_context.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_CONTEXT_H_
+#define CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_CONTEXT_H_
+
+#include <map>
+#include <memory>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "components/payments/payment_app.mojom.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+class PaymentAppManager;
+class ServiceWorkerContextWrapper;
+
+class CONTENT_EXPORT PaymentAppContext
+    : public base::RefCountedThreadSafe<PaymentAppContext> {
+ public:
+  PaymentAppContext();
+
+  // Init and Shutdown are for use on the UI thread when the
+  // StoragePartition is being setup and torn down.
+  void Init(const scoped_refptr<ServiceWorkerContextWrapper>& context);

[jkarlin, 2016/11/08 13:48:53]

Passing a const scoped_refptr<X>& is now against best practice. Instead, pass
scoped_refptr<ServiceWorkerContextWrapper> to make it clear that Init is taking
ownership.

[zino, 2016/11/08 14:34:21]

Done.

+
+  // Shutdown must be called before deleting this. Call on the UI thread.
+  void Shutdown();
+
+  // Create a PaymentAppManager that is owned by this. Call on the UI
+  // thread.
+  void CreateService(
+      mojo::InterfaceRequest<payments::mojom::PaymentAppManager> request);
+
+  // Called by PaymentAppManager objects so that they can
+  // be deleted. Call on the IO thread.
+  void ServiceHadConnectionError(PaymentAppManager* service);
+
+ protected:
+  friend class base::RefCountedThreadSafe<PaymentAppContext>;
+  virtual ~PaymentAppContext();
+
+ private:
+  void CreateServiceOnIOThread(
+      mojo::InterfaceRequest<payments::mojom::PaymentAppManager> request);
+
+  void ShutdownOnIO();
+
+  // The services are owned by this. They're either deleted
+  // during ShutdownOnIO or when the channel is closed via
+  // ServiceHadConnectionError. Only accessed on the IO thread.
+  std::map<PaymentAppManager*, std::unique_ptr<PaymentAppManager>> services_;
+
+  DISALLOW_COPY_AND_ASSIGN(PaymentAppContext);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_PAYMENT_APP_PAYMENT_APP_CONTEXT_H_

[jkarlin, 2016/11/08 13:48:53]

Should be CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_CONTEXT_H_

[zino, 2016/11/08 14:34:21]

Done.