[Web Payments] Implement the CVC Unmask dialog.

components/payments/content/payment_request_state.h

Index: components/payments/content/payment_request_state.h
diff --git a/components/payments/content/payment_request_state.h b/components/payments/content/payment_request_state.h
index 19f9979b59f17dd1acc49c2012e9e0831efb7761..f1d067bbeac2251eea2664d19b9d3f572a02b0c1 100644
--- a/components/payments/content/payment_request_state.h
+++ b/components/payments/content/payment_request_state.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "components/payments/content/payment_request.mojom.h"
+#include "components/payments/core/autofill_payment_instrument.h"
 #include "components/payments/core/payment_instrument.h"
 
 namespace autofill {
@@ -20,6 +21,7 @@ class PersonalDataManager;
 
 namespace payments {
 
+class PaymentRequestDelegate;
 class PaymentRequestSpec;
 
 // Keeps track of the information currently selected by the user and whether the
@@ -60,7 +62,8 @@ class PaymentRequestState : public PaymentInstrument::Delegate {
   PaymentRequestState(PaymentRequestSpec* spec,
                       Delegate* delegate,
                       const std::string& app_locale,
-                      autofill::PersonalDataManager* personal_data_manager);
+                      autofill::PersonalDataManager* personal_data_manager,
+                      PaymentRequestDelegate* payment_request_delegate);
   ~PaymentRequestState() override;
 
   // Returns whether the user has at least one instrument that satisfies the
@@ -120,6 +123,8 @@ class PaymentRequestState : public PaymentInstrument::Delegate {
   const std::string& GetApplicationLocale();
   autofill::PersonalDataManager* GetPersonalDataManager();
 
+  Delegate* delegate() { return delegate_; }
+
  private:
   // Fetches the Autofill Profiles for this user from the PersonalDataManager,
   // and stores copies of them, owned by this PaymentRequestState, in
@@ -167,6 +172,8 @@ class PaymentRequestState : public PaymentInstrument::Delegate {
   // Credit cards are directly owned by the instruments in this list.
   std::vector<std::unique_ptr<PaymentInstrument>> available_instruments_;
 
+  PaymentRequestDelegate* payment_request_delegate_;
+
   base::ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestState);