[Web Payments] Add Cancel button to all sheets

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

Index: chrome/browser/ui/views/payments/shipping_list_view_controller.cc
diff --git a/chrome/browser/ui/views/payments/shipping_list_view_controller.cc b/chrome/browser/ui/views/payments/shipping_list_view_controller.cc
index 25b391f107d36710de64b0d6182661504e0a5508..79acfeedb56c4c6be684efa2730ccf247f2ff491 100644
--- a/chrome/browser/ui/views/payments/shipping_list_view_controller.cc
+++ b/chrome/browser/ui/views/payments/shipping_list_view_controller.cc
@@ -49,18 +49,4 @@ std::unique_ptr<views::View> ShippingListViewController::CreateView() {
       std::move(content_view));
 }
 
-void ShippingListViewController::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