[Web Payments] Handle "Enter" accelerator when there's a primary action

chrome/browser/ui/views/payments/credit_card_editor_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_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 70 matching lines @@
 
     EditorField field_;
     // Outlives this class.
     EditorViewController* controller_;
     // The list of supported basic card networks.
     std::set<std::string> supported_card_networks_;
 
     DISALLOW_COPY_AND_ASSIGN(CreditCardValidationDelegate);
   };
 
+  bool GetSheetId(DialogViewID* sheet_id) override;
+
   // Called when |credit_card_to_edit_| was successfully edited.
   base::OnceClosure on_edited_;
   // Called when a new card was added. The const reference is short-lived, and
   // the callee should make a copy.
   base::OnceCallback<void(const autofill::CreditCard&)> on_added_;
 
   // If non-nullptr, a pointer to an object to be edited. Must outlive this
   // controller.
   autofill::CreditCard* credit_card_to_edit_;
 
   DISALLOW_COPY_AND_ASSIGN(CreditCardEditorViewController);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_CREDIT_CARD_EDITOR_VIEW_CONTROLLER_H_