[Web Payments] Implement the CVC Unmask dialog.

chrome/browser/ui/views/payments/cvc_unmask_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_CVC_UNMASK_VIEW_CONTROLLER_H_
+#define CHROME_BROWSER_UI_VIEWS_PAYMENTS_CVC_UNMASK_VIEW_CONTROLLER_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "chrome/browser/ui/views/payments/payment_request_sheet_controller.h"
+
+namespace views {
+class Textfield;
+}
+
+namespace payments {
+
+class CvcUnmaskViewController : public PaymentRequestSheetController {
+ public:
+  class Observer {
+   public:
+    virtual void OnCvcConfirmed(const base::string16& cvc) = 0;
+    virtual void OnClosed() = 0;
+  };
+
+  CvcUnmaskViewController(PaymentRequestSpec* spec,
+                          PaymentRequestState* state,
+                          PaymentRequestDialogView* dialog,
+                          const base::string16& masked_card_number,

[Mathieu, 2017/03/30 14:37:32]

CreditCard* to replace this arg and the next?

+                          const std::string& card_type);
+  ~CvcUnmaskViewController() override;
+
+  void AddObserver(Observer* observer);
+
+ protected:
+  // PaymentRequestSheetController:
+  base::string16 GetSheetTitle() override;
+  void FillContentView(views::View* content_view) override;
+  std::unique_ptr<views::Button> CreatePrimaryButton() override;
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+
+ private:
+  void RaiseOnCvcConfirmed();
+
+  base::ObserverList<Observer> observer_list_;
+  views::Textfield* cvc_field_;
+  base::string16 masked_card_number_;
+  std::string card_type_;
+
+  DISALLOW_COPY_AND_ASSIGN(CvcUnmaskViewController);
+};
+
+}  // namespace payments
+
+#endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_CVC_UNMASK_VIEW_CONTROLLER_H_