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

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

Index: chrome/browser/ui/views/payments/shipping_address_editor_view_controller.cc
diff --git a/chrome/browser/ui/views/payments/shipping_address_editor_view_controller.cc b/chrome/browser/ui/views/payments/shipping_address_editor_view_controller.cc
index d0133f4a3117e0b652297a3fab242fa43d1f0109..abc7a971b2c184f8e60bccccc601ba20d9314742 100644
--- a/chrome/browser/ui/views/payments/shipping_address_editor_view_controller.cc
+++ b/chrome/browser/ui/views/payments/shipping_address_editor_view_controller.cc
@@ -87,10 +87,6 @@ ShippingAddressEditorViewController::CreateHeaderView() {
   return base::MakeUnique<views::View>();
 }
 
-int ShippingAddressEditorViewController::GetViewHeaderTitleId() const {
-  return IDS_PAYMENT_REQUEST_ADDRESS_EDITOR_ADD_TITLE;
-}
-
 std::vector<EditorField>
 ShippingAddressEditorViewController::GetFieldDefinitions() {
   return editor_fields_;
@@ -196,6 +192,11 @@ void ShippingAddressEditorViewController::UpdateEditorView() {
   }
 }
 
+base::string16 ShippingAddressEditorViewController::GetSheetTitle() {
+  return l10n_util::GetStringUTF16(
+      IDS_PAYMENT_REQUEST_ADDRESS_EDITOR_ADD_TITLE);
+}
+
 void ShippingAddressEditorViewController::UpdateEditorFields() {
   editor_fields_.clear();
   std::string chosen_country_code;