[Web Payments] Implement the CVC Unmask dialog.

components/payments/content/payment_request_state.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 COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_STATE_H_
 #define COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_STATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "components/payments/content/payment_request.mojom.h"
 #include "components/payments/core/payment_instrument.h"
 
 namespace autofill {
 class AutofillProfile;
 class PersonalDataManager;
 }  // namespace autofill
 
 namespace payments {
 
 class PaymentRequestSpec;
+class PaymentRequestDelegate;
 
 // Keeps track of the information currently selected by the user and whether the
 // user is ready to pay. Uses information from the PaymentRequestSpec, which is
 // what the merchant has specified, as input into the "is ready to pay"
 // computation.
 class PaymentRequestState : public PaymentInstrument::Delegate {
  public:
   // Any class call add itself as Observer via AddObserver() and receive
   // notification about the state changing.
   class Observer {
    public:
     // Called when the information (payment method, address/contact info,
     // shipping option) changes.
     virtual void OnSelectedInformationChanged() = 0;
 
    protected:
     virtual ~Observer() {}
   };
 
   class Delegate {
    public:
     // Called when the PaymentResponse is available.
     virtual void OnPaymentResponseAvailable(
         mojom::PaymentResponsePtr response) = 0;
+    virtual PaymentRequestDelegate* GetPaymentRequestDelegate() = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
   PaymentRequestState(PaymentRequestSpec* spec,
                       Delegate* delegate,
                       const std::string& app_locale,
                       autofill::PersonalDataManager* personal_data_manager);
   ~PaymentRequestState() override;
@@ skipping 114 matching lines @@
   std::vector<std::unique_ptr<PaymentInstrument>> available_instruments_;
 
   base::ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestState);
 };
 
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_STATE_H_