[Payments] Add validation for unsupported credit card types in editor.

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 <set>
+
 #include "base/macros.h"
 #include "chrome/browser/ui/views/payments/editor_view_controller.h"
 #include "chrome/browser/ui/views/payments/validation_delegate.h"
 #include "ui/base/models/simple_combobox_model.h"
 
 namespace payments {
 
 class PaymentRequest;
 class PaymentRequestDialogView;
 
@@ skipping 10 matching lines @@
   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;
 
  private:
   class CreditCardValidationDelegate : public ValidationDelegate {
    public:
-    CreditCardValidationDelegate(const EditorField& field,
-                                 EditorViewController* controller);
+    // 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);
     ~CreditCardValidationDelegate() override;
 
     // ValidationDelegate:
     bool ValidateTextfield(views::Textfield* textfield) override;
     bool ValidateCombobox(views::Combobox* combobox) override;
 
    private:
     // Validates a specific |value|.
     bool ValidateValue(const base::string16& value);
 
     EditorField field_;
     // Outlives this class.
     EditorViewController* controller_;
+    // The list of supported basic card networks.
+    std::set<std::string> supported_card_networks_;
 
     DISALLOW_COPY_AND_ASSIGN(CreditCardValidationDelegate);
   };
 
   DISALLOW_COPY_AND_ASSIGN(CreditCardEditorViewController);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_