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

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

Index: chrome/browser/ui/views/payments/payment_request_dialog.cc
diff --git a/chrome/browser/ui/views/payments/payment_request_dialog.cc b/chrome/browser/ui/views/payments/payment_request_dialog.cc
index 1386b0a83de769b727fa5b8baada6256e04852b0..58af72fbc2849df579a0295a15fb49a9e74438ed 100644
--- a/chrome/browser/ui/views/payments/payment_request_dialog.cc
+++ b/chrome/browser/ui/views/payments/payment_request_dialog.cc
@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/ui/views/payments/order_summary_view_controller.h"
+#include "chrome/browser/ui/views/payments/payment_method_view_controller.h"
 #include "chrome/browser/ui/views/payments/payment_sheet_view_controller.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/constrained_window/constrained_window_views.h"
@@ -97,6 +98,13 @@ void PaymentRequestDialog::ShowOrderSummary() {
                    true);
 }
 
+void PaymentRequestDialog::ShowPaymentMethodSheet() {
+    view_stack_.Push(
+        CreateViewAndInstallController<PaymentMethodViewController>(
+            &controller_map_, request_, this),
+        true);
+}
+
 void PaymentRequestDialog::CloseDialog() {
   GetWidget()->Close();
 }