[Web Payments] Refactor sheet display to allow updating view content

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

Index: chrome/browser/ui/views/payments/shipping_option_view_controller.cc
diff --git a/chrome/browser/ui/views/payments/shipping_option_view_controller.cc b/chrome/browser/ui/views/payments/shipping_option_view_controller.cc
index 59a13365c3fa8ea30b66487adcdab99bc5c7fa2e..2da38f76e43beb9746eb28f5756e972d1ccc3d8b 100644
--- a/chrome/browser/ui/views/payments/shipping_option_view_controller.cc
+++ b/chrome/browser/ui/views/payments/shipping_option_view_controller.cc
@@ -73,14 +73,12 @@ ShippingOptionViewController::ShippingOptionViewController(
 
 ShippingOptionViewController::~ShippingOptionViewController() {}
 
-std::unique_ptr<views::View> ShippingOptionViewController::CreateView() {
-  std::unique_ptr<views::View> list_view =
-      shipping_option_list_.CreateListView();
-  return CreatePaymentView(
-      CreateSheetHeaderView(
-          true, GetShippingOptionSectionString(spec()->options().shipping_type),
-          this),
-      std::move(list_view));
+base::string16 ShippingOptionViewController::GetSheetTitle() {
+  return GetShippingOptionSectionString(spec()->options().shipping_type);
+}
+
+void ShippingOptionViewController::FillContentView(views::View* content_view) {
+  content_view->AddChildView(shipping_option_list_.CreateListView().release());
 }
 
 std::unique_ptr<views::View>