[WebPayments] Start populating the Payment Sheet.

chrome/browser/ui/views/payments/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 "chrome/browser/ui/views/payments/payment_request_dialog.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 53 matching lines @@
 ui::ModalType PaymentRequestDialog::GetModalType() const {
   return ui::MODAL_TYPE_CHILD;
 }
 
 bool PaymentRequestDialog::Cancel() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   impl_->Cancel();
   return true;
 }
 
+bool PaymentRequestDialog::ShouldShowCloseButton() const {
+  // Don't show the normal close button on the dialog. This is because the
+  // typical dialog header doesn't allow displaying anything other that the
+  // title and the close button. This is insufficient for the PaymentRequest
+  // dialog, which must sometimes show the back arrow next to the title.
+  // Moreover, the title (and back arrow) should animate with the view they're
+  // attached to.
+  return false;
+}
+
+int PaymentRequestDialog::GetDialogButtons() const {
+  // The buttons should animate along with the different dialog sheets since
+  // each sheet presents a different set of buttons. Because of this, hide the
+  // usual dialog buttons.
+  return ui::DIALOG_BUTTON_NONE;
+}
+
 void PaymentRequestDialog::GoBack() {
   view_stack_.Pop();
 }
 
 void PaymentRequestDialog::ShowOrderSummary() {
     view_stack_.Push(
         CreateViewAndInstallController<OrderSummaryViewController>(
             &controller_map_, impl_, this),
         true);
 }
 
+void PaymentRequestDialog::CloseDialog() {
+  GetWidget()->Close();
+}
+
 void PaymentRequestDialog::ShowInitialPaymentSheet() {
   view_stack_.Push(
       CreateViewAndInstallController<PaymentSheetViewController>(
           &controller_map_, impl_, this),
       false);
 }
 
 gfx::Size PaymentRequestDialog::GetPreferredSize() const {
   return gfx::Size(450, 450);
 }
 
 void PaymentRequestDialog::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   // When a view that is associated with a controller is removed from this
   // view's descendants, dispose of the controller.
   if (!details.is_add &&
       controller_map_.find(details.child) != controller_map_.end()) {
     DCHECK(!details.move_view);
     controller_map_.erase(details.child);
   }
 }
 
 }  // namespace payments