[Web Payments] Initial plumb of Payment Request dialog

chrome/browser/payments/ui/payment_request_dialog.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 "base/strings/utf_string_conversions.h"
+#include "chrome/browser/payments/ui/payment_request_dialog.h"
+#include "content/public/browser/browser_thread.h"
+#include "ui/views/layout/fill_layout.h"
+
+namespace payments {
+
+PaymentRequestDialog::PaymentRequestDialog(
+    payments::mojom::PaymentRequestClientPtr client)
+    : client_(std::move(client)),
+      label_(new views::Label(base::ASCIIToUTF16("Payments dialog"))) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  SetLayoutManager(new views::FillLayout());
+  AddChildView(label_.get());
+}
+
+PaymentRequestDialog::~PaymentRequestDialog() {}
+
+ui::ModalType PaymentRequestDialog::GetModalType() const {
+  return ui::MODAL_TYPE_CHILD;
+}
+
+gfx::Size PaymentRequestDialog::GetPreferredSize() const {
+  gfx::Size ps = label_->GetPreferredSize();
+  ps.Enlarge(200, 200);
+  return ps;
+}
+
+bool PaymentRequestDialog::Cancel() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  client_->OnError(payments::mojom::PaymentErrorReason::USER_CANCEL);
+  return true;
+}
+
+}  // namespace payments