[Web Payments] Re-add extra view in the footer.

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/memory/ptr_util.h"
@@ skipping 129 matching lines @@
 
 std::unique_ptr<views::View> PaymentMethodViewController::CreateView() {
   return CreatePaymentView(
       CreateSheetHeaderView(
           true, l10n_util::GetStringUTF16(
                     IDS_PAYMENT_REQUEST_PAYMENT_METHOD_SECTION_NAME),
           this),
       payment_method_list_.CreateListView());
 }
 
-std::unique_ptr<views::View> PaymentMethodViewController::CreateExtraView() {
+std::unique_ptr<views::View>
+PaymentMethodViewController::CreateExtraFooterView() {
   std::unique_ptr<views::View> extra_view = base::MakeUnique<views::View>();
 
   extra_view->SetLayoutManager(new views::BoxLayout(
       views::BoxLayout::kHorizontal, kPaymentRequestRowHorizontalInsets,
       kPaymentRequestRowVerticalInsets, kPaymentRequestButtonSpacing));
 
   views::LabelButton* button = views::MdTextButton::CreateSecondaryUiButton(
       this, l10n_util::GetStringUTF16(IDS_AUTOFILL_ADD_CREDITCARD_CAPTION));
   button->set_tag(static_cast<int>(
       PaymentMethodViewControllerTags::ADD_CREDIT_CARD_BUTTON));
@@ skipping 11 matching lines @@
         PaymentMethodViewControllerTags::ADD_CREDIT_CARD_BUTTON):
       dialog()->ShowCreditCardEditor();
       break;
     default:
       PaymentRequestSheetController::ButtonPressed(sender, event);
       break;
   }
 }
 
 }  // namespace payments