[Payment Request] Error message screen

ios/chrome/browser/payments/payment_items_display_view_controller.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_ITEMS_DISPLAY_VIEW_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_ITEMS_DISPLAY_VIEW_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 #include <vector>
 
 #include "ios/chrome/browser/payments/payment_request.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller.h"
 #include "ios/web/public/payments/payment_request.h"
 
 // The accessibility identifiers of the cells in the collection view.
-extern NSString* const kPaymentItemsDisplayItemId;
+extern NSString* const kPaymentItemsDisplayItemID;
 
 @class PaymentItemsDisplayViewController;
 
 // Delegate protocol for PaymentItemsDisplayViewController.
 @protocol PaymentItemsDisplayViewControllerDelegate<NSObject>
 
 // Notifies the delegate that the user has chosen to return to the previous
 // screen.
 - (void)paymentItemsDisplayViewControllerDidReturn:
     (PaymentItemsDisplayViewController*)controller;
 
 // Notifies the delegate that the user has confirmed the payment.
 - (void)paymentItemsDisplayViewControllerDidConfirm:
     (PaymentItemsDisplayViewController*)controller;
 
 @end
 
 // View controller responsible for presenting the payment items from the payment
 // request. The payment items are the line items that should sum to the total
 // payment (e.g. individual goods/services, tax, shipping).
 @interface PaymentItemsDisplayViewController : CollectionViewController
 
 // The delegate to be notified when the user selects touches the return button
 // or the pay button.
-@property(nonatomic, weak) id<PaymentItemsDisplayViewControllerDelegate>
-    delegate;
+@property(nonatomic, weak)
+    id<PaymentItemsDisplayViewControllerDelegate> delegate;
 
 // Initializes this object with an instance of PaymentRequest which owns an
 // instance of web::PaymentRequest as provided by the page invoking the Payment
 // Request API. This object will not take ownership of |paymentRequest|.
 - (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest
                       payButtonEnabled:(BOOL)payButtonEnabled
     NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 - (instancetype)initWithStyle:(CollectionViewControllerStyle)style
     NS_UNAVAILABLE;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_ITEMS_DISPLAY_VIEW_CONTROLLER_H_