[Payment Request] Change the lifetime management of PaymentRequestImpl

chrome/browser/payments/chrome_payment_request_delegate.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 CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_
+#define CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_
+
+#include "base/macros.h"
+#include "components/payments/payment_request_delegate.h"
+
+namespace payments {
+
+class PaymentRequest;
+
+class ChromePaymentRequestDelegate : public PaymentRequestDelegate {
+ public:
+  ChromePaymentRequestDelegate() {}
+  ~ChromePaymentRequestDelegate() override {}
+
+  void ShowPaymentRequestDialog(PaymentRequest* request) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChromePaymentRequestDelegate);
+};
+
+}  // namespace payments
+
+#endif  // CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_