Cancels payment request when Settings is tapped, and opens the Autofill settings page.

ios/chrome/browser/payments/payment_request_coordinator.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 IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_COORDINATOR_H_
 #define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_COORDINATOR_H_
 
 #import <UIKit/UIKit.h>
 
 #include "base/ios/block_types.h"
@@ skipping 28 matching lines @@
 
 @class PaymentRequestCoordinator;
 
 // Delegate protocol for PaymentRequestCoordinator.
 @protocol PaymentRequestCoordinatorDelegate<NSObject>
 
 // Notifies the delegate that the user has canceled the payment request.
 - (void)paymentRequestCoordinatorDidCancel:
     (PaymentRequestCoordinator*)coordinator;
 
+// Notifies the delegate that the user has selected to go to the card and
+// address options page in Settings.
+- (void)paymentRequestCoordinatorDidSelectSettings:
+    (PaymentRequestCoordinator*)coordinator;
+
 // Notifies the delegate that the user has confirmed the payment request.
 - (void)paymentRequestCoordinator:(PaymentRequestCoordinator*)coordinator
     didConfirmWithPaymentResponse:(web::PaymentResponse)paymentResponse;
 
 // Notifies the delegate that the user has selected a shipping address.
 - (void)paymentRequestCoordinator:(PaymentRequestCoordinator*)coordinator
          didSelectShippingAddress:(payments::PaymentAddress)shippingAddress;
 
 // Notifies the delegate that the user has selected a shipping option.
 - (void)paymentRequestCoordinator:(PaymentRequestCoordinator*)coordinator
@@ skipping 49 matching lines @@
 // Called when a credit card has been successfully unmasked. Note that |card|
 // may be different from what's returned by the selected_credit_card() method of
 // |paymentRequest|, because CVC unmasking process may update the credit card
 // number and expiration date.
 - (void)fullCardRequestDidSucceedWithCard:(const autofill::CreditCard&)card
                                       CVC:(const base::string16&)cvc;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_COORDINATOR_H_