[Payment Request] Error message screen

ios/chrome/browser/payments/payment_method_selection_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_METHOD_SELECTION_COORDINATOR_H_
 #define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_METHOD_SELECTION_COORDINATOR_H_
 
 #import <UIKit/UIKit.h>
 #include <vector>
 
@@ skipping 28 matching lines @@
 @interface PaymentMethodSelectionCoordinator
     : ChromeCoordinator<PaymentMethodSelectionViewControllerDelegate>
 
 // The PaymentRequest object owning an instance of web::PaymentRequest as
 // provided by the page invoking the Payment Request API. This pointer is not
 // owned by this class and should outlive it.
 @property(nonatomic, assign) PaymentRequest* paymentRequest;
 
 // The delegate to be notified when the user selects a payment method or returns
 // without selecting a payment method.
-@property(nonatomic, weak) id<PaymentMethodSelectionCoordinatorDelegate>
-    delegate;
+@property(nonatomic, weak)
+    id<PaymentMethodSelectionCoordinatorDelegate> delegate;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_METHOD_SELECTION_COORDINATOR_H_