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

chrome/browser/ui/views/payments/credit_card_editor_view_controller.h

Index: chrome/browser/ui/views/payments/credit_card_editor_view_controller.h
diff --git a/chrome/browser/ui/views/payments/credit_card_editor_view_controller.h b/chrome/browser/ui/views/payments/credit_card_editor_view_controller.h
index 281066440d4c196e5c19f8e2eb6ab691e19e5ba9..c3f5b6caef24e2ec4e2f6d73c8aca23ee659a593 100644
--- a/chrome/browser/ui/views/payments/credit_card_editor_view_controller.h
+++ b/chrome/browser/ui/views/payments/credit_card_editor_view_controller.h
@@ -32,7 +32,6 @@ class CreditCardEditorViewController : public EditorViewController {
 
   // EditorViewController:
   std::unique_ptr<views::View> CreateHeaderView() override;
-  int GetViewHeaderTitleId() const override;
   std::vector<EditorField> GetFieldDefinitions() override;
   bool ValidateModelAndSave() override;
   std::unique_ptr<ValidationDelegate> CreateValidationDelegate(
@@ -40,6 +39,10 @@ class CreditCardEditorViewController : public EditorViewController {
   std::unique_ptr<ui::ComboboxModel> GetComboboxModelForType(
       const autofill::ServerFieldType& type) override;
 
+ protected:
+  // PaymentRequestSheetController:
+  base::string16 GetSheetTitle() override;
+
  private:
   class CreditCardValidationDelegate : public ValidationDelegate {
    public: