[Web Payments] Initial plumb of Payment Request dialog

chrome/browser/payments/payment_request_impl.cc

+// 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.
+
+#include "chrome/browser/payments/payment_request_impl.h"
+
+#include "chrome/browser/payments/ui/payment_request_dialog.h"
+#include "components/web_modal/web_contents_modal_dialog_host.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
+#include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
+
+void CreatePaymentRequestHandler(
+    content::RenderFrameHost* render_frame_host,
+    content::WebContents* web_contents,
+    mojo::InterfaceRequest<blink::mojom::PaymentRequest> request) {
+  // TODO: The goal was that this delete itself, but it doesn't yet.
+  new PaymentRequestImpl(render_frame_host, web_contents, std::move(request));

[Lei Zhang, 2016/11/09 18:08:55]

Does anything run this code yet? LSAN may complain if it leaks.

[Kevin Bailey, 2016/11/15 14:36:32]

It's behind a flag, but nevertheless I tried improving the memory management.

+}
+
+PaymentRequestImpl::PaymentRequestImpl(
+    content::RenderFrameHost* unused_render_frame_host,

[Lei Zhang, 2016/11/09 18:08:55]

Is that because the RFH is used on Android?

[Kevin Bailey, 2016/11/15 14:36:32]

I removed it. It's based on WebContents now.

+    content::WebContents* web_contents,
+    mojo::InterfaceRequest<blink::mojom::PaymentRequest> request)
+  // TODO: consider a weak ptr too

[Lei Zhang, 2016/11/09 18:08:55]

Well, when is this going to delete itself?

[Kevin Bailey, 2016/11/15 14:36:32]

At this point, when the Mojo connection goes away.

+  : web_contents_(web_contents),
+    binding_(this, std::move(request)) {
+}
+
+PaymentRequestImpl::~PaymentRequestImpl() {}
+
+void PaymentRequestImpl::Init(
+    blink::mojom::PaymentRequestClientPtr client,
+    std::vector<blink::mojom::PaymentMethodDataPtr> methodData,
+    blink::mojom::PaymentDetailsPtr details,
+    blink::mojom::PaymentOptionsPtr options) {
+  // TODO: Give the dialog |this| to delete it when done.
+  views::DialogDelegate::CreateDialogWidget(new PaymentRequestDialog, nullptr,
+      web_modal::WebContentsModalDialogManager::FromWebContents(web_contents_)
+          ->delegate()
+          ->GetWebContentsModalDialogHost()
+          ->GetHostView())->Show();
+}