[WebPayments] Add the Payment Method section in the Payment Sheet

chrome/browser/ui/views/payments/payment_method_view_controller.cc

+// 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.
+
+#include "chrome/browser/ui/views/payments/payment_method_view_controller.h"
+
+#include <memory>
+#include <utility>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/ui/views/payments/payment_request_dialog.h"
+#include "chrome/browser/ui/views/payments/payment_request_views_util.h"
+#include "components/payments/payment_request.h"
+#include "components/strings/grit/components_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace payments {
+
+PaymentMethodViewController::PaymentMethodViewController(
+    PaymentRequest* request, PaymentRequestDialog* dialog)
+  : PaymentRequestSheetController(request, dialog) {}
+
+PaymentMethodViewController::~PaymentMethodViewController() {}
+
+std::unique_ptr<views::View> PaymentMethodViewController::CreateView() {
+  std::unique_ptr<views::View> content_view = base::MakeUnique<views::View>();
+
+  // TODO(anthonyvd): populate this view.
+
+  return CreatePaymentView(CreateSheetHeaderView(
+          true,
+          l10n_util::GetStringUTF16(
+              IDS_PAYMENT_REQUEST_PAYMENT_METHOD_SECTION_NAME),
+          this),
+      std::move(content_view));
+}
+
+void PaymentMethodViewController::ButtonPressed(
+    views::Button* sender, const ui::Event& event) {
+  switch (sender->tag()) {
+    case static_cast<int>(PaymentRequestCommonTags::CLOSE_BUTTON_TAG):
+      dialog()->CloseDialog();
+      break;
+    case static_cast<int>(PaymentRequestCommonTags::BACK_BUTTON_TAG):
+      dialog()->GoBack();
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
+}  // namespace payments