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

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 14 matching lines @@
 class CreditCardEditorViewController : public EditorViewController {
  public:
   // Does not take ownership of the arguments, which should outlive this object.
   CreditCardEditorViewController(PaymentRequestSpec* spec,
                                  PaymentRequestState* state,
                                  PaymentRequestDialogView* dialog);
   ~CreditCardEditorViewController() override;
 
   // 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(
       const EditorField& field) override;
   std::unique_ptr<ui::ComboboxModel> GetComboboxModelForType(
       const autofill::ServerFieldType& type) override;
 
+ protected:
+  // PaymentRequestSheetController:
+  base::string16 GetSheetTitle() override;
+
  private:
   class CreditCardValidationDelegate : public ValidationDelegate {
    public:
     // Used to validate |field| type. A reference to the |controller| should
     // outlive this delegate, and a list of |supported_card_networks| can be
     // passed in to validate |field| (the data will be copied to the delegate).
     CreditCardValidationDelegate(
         const EditorField& field,
         EditorViewController* controller,
         const std::vector<std::string>& supported_card_networks);
@@ skipping 15 matching lines @@
 
     DISALLOW_COPY_AND_ASSIGN(CreditCardValidationDelegate);
   };
 
   DISALLOW_COPY_AND_ASSIGN(CreditCardEditorViewController);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_