[Payment Request] Change the lifetime management of PaymentRequestImpl

chrome/browser/payments/payment_request_factory.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 CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_FACTORY_H_
+#define CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_FACTORY_H_
+
+#include "components/payments/payment_request.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace content {
+class WebContents;
+}
+
+namespace payments {
+
+// Will create a PaymentRequest attached to |web_contents|, based on the
+// contents of |request|. This is called everytime a new Mojo PaymentRequest is
+// created.
+void CreatePaymentRequestForWebContents(
+    content::WebContents* web_contents,
+    mojo::InterfaceRequest<payments::mojom::PaymentRequest> request);
+
+}  // namespace payments
+
+#endif  // CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_FACTORY_H_