[WebPayments] Start populating the Payment Sheet.

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

 // Copyright 2016 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_PAYMENT_REQUEST_DIALOG_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_DIALOG_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 18 matching lines @@
 class PaymentRequestDialog : public views::DialogDelegateView {
  public:
   explicit PaymentRequestDialog(PaymentRequestImpl* impl);
   ~PaymentRequestDialog() override;
 
   // views::WidgetDelegate
   ui::ModalType GetModalType() const override;
 
   // views::DialogDelegate
   bool Cancel() override;
+  bool ShouldShowCloseButton() const override;
+  int GetDialogButtons() const override;
 
   void GoBack();
   void ShowOrderSummary();
+  void CloseDialog();
 
  private:
   void ShowInitialPaymentSheet();
 
   // views::View
   gfx::Size GetPreferredSize() const override;
   void ViewHierarchyChanged(const ViewHierarchyChangedDetails& details)
       override;
 
   // Non-owned reference to the PaymentRequestImpl that initiated this dialog.
   // Since the PaymentRequestImpl object always outlives this one, the pointer
   // should always be valid even though there is no direct ownership
   // relationship between the two.
   PaymentRequestImpl* impl_;
   ControllerMap controller_map_;
   ViewStack view_stack_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestDialog);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_DIALOG_H_