[Web Payments] Implement the CVC Unmask dialog.

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

Index: chrome/browser/ui/views/payments/payment_request_dialog_view.h
diff --git a/chrome/browser/ui/views/payments/payment_request_dialog_view.h b/chrome/browser/ui/views/payments/payment_request_dialog_view.h
index 821c4362bdad08bd716c7532a065076f6b507b2a..3dcb6cf268c57b96baa7a0aa0aa5f05861a1bd59 100644
--- a/chrome/browser/ui/views/payments/payment_request_dialog_view.h
+++ b/chrome/browser/ui/views/payments/payment_request_dialog_view.h
@@ -10,11 +10,14 @@
 
 #include "base/macros.h"
 #include "chrome/browser/ui/views/payments/view_stack.h"
+#include "components/autofill/core/browser/payments/full_card_request.h"
 #include "components/payments/content/payment_request_dialog.h"
 #include "ui/views/window/dialog_delegate.h"
 
 namespace payments {
 
+class CvcUnmaskUIDelegate;
+class CvcUnmaskViewController;
 class PaymentRequest;
 class PaymentRequestSheetController;
 
@@ -69,6 +72,8 @@ class PaymentRequestDialogView : public views::DialogDelegateView,
   // payments::PaymentRequestDialog
   void ShowDialog() override;
   void CloseDialog() override;
+  base::WeakPtr<autofill::payments::FullCardRequest::UIDelegate>
+  GetFullCardRequestUIDelegate() override;
 
   void Pay();
   void GoBack();
@@ -81,6 +86,9 @@ class PaymentRequestDialogView : public views::DialogDelegateView,
   void ShowShippingAddressEditor();
   void EditorViewUpdated();
 
+  void ShowCvcUnmaskSheet(
+      std::unique_ptr<CvcUnmaskViewController> view_controller);
+
   ViewStack* view_stack_for_testing() { return &view_stack_; }
 
  private:
@@ -106,6 +114,8 @@ class PaymentRequestDialogView : public views::DialogDelegateView,
   // controller_map_.
   bool being_closed_;
 
+  std::unique_ptr<CvcUnmaskUIDelegate> cvc_unmask_ui_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestDialogView);
 };