Add billing address as a mandatory field of Payments credit cards.

chrome/browser/ui/views/payments/payment_request_browsertest_base.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_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 
 #include <list>
 #include <memory>
 #include <string>
@@ skipping 155 matching lines @@
   void PayWithCreditCardAndWait(const base::string16& cvc);
 
   // Getting/setting the |value| in the textfield of a given |type|.
   base::string16 GetEditorTextfieldValue(autofill::ServerFieldType type);
   void SetEditorTextfieldValue(const base::string16& value,
                                autofill::ServerFieldType type);
   // Getting/setting the |value| in the combobox of a given |type|.
   base::string16 GetComboboxValue(autofill::ServerFieldType type);
   void SetComboboxValue(const base::string16& value,
                         autofill::ServerFieldType type);
+  // Special case for the billing address since the interesting value is not
+  // the visible one accessible directly on the base combobox model.
+  void SelectBillingAddress(const std::string& billing_address_id);
 
   // Whether the editor textfield/combobox for the given |type| is currently in
   // an invalid state.
   bool IsEditorTextfieldInvalid(autofill::ServerFieldType type);
   bool IsEditorComboboxInvalid(autofill::ServerFieldType type);
 
   bool IsPayButtonEnabled();
 
   // Sets proper animation delegates and waits for animation to finish.
   void WaitForAnimation();
@@ skipping 81 matching lines @@
   TestChromePaymentRequestDelegate* delegate_;
   bool is_incognito_;
   bool is_valid_ssl_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestBrowserTestBase);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_