[Payment Request] Error message screen

ios/chrome/browser/payments/payment_request_coordinator.h

Index: ios/chrome/browser/payments/payment_request_coordinator.h
diff --git a/ios/chrome/browser/payments/payment_request_coordinator.h b/ios/chrome/browser/payments/payment_request_coordinator.h
index bd316ffcc49eaff98d1055222573a1dabef41c9b..5491986c88d77c175203cc411e27cfbf86ea59cc 100644
--- a/ios/chrome/browser/payments/payment_request_coordinator.h
+++ b/ios/chrome/browser/payments/payment_request_coordinator.h
@@ -7,11 +7,13 @@
 
 #import <UIKit/UIKit.h>
 
+#include "base/ios/block_types.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #import "ios/chrome/browser/chrome_coordinator.h"
 #import "ios/chrome/browser/payments/payment_items_display_coordinator.h"
 #import "ios/chrome/browser/payments/payment_method_selection_coordinator.h"
 #include "ios/chrome/browser/payments/payment_request.h"
+#include "ios/chrome/browser/payments/payment_request_error_coordinator.h"
 #import "ios/chrome/browser/payments/payment_request_view_controller.h"
 #import "ios/chrome/browser/payments/shipping_address_selection_coordinator.h"
 #import "ios/chrome/browser/payments/shipping_option_selection_coordinator.h"
@@ -48,16 +50,12 @@ class ChromeBrowserState;
 // provided in the initializer.
 @interface PaymentRequestCoordinator
     : ChromeCoordinator<PaymentRequestViewControllerDelegate,
+                        PaymentRequestErrorCoordinatorDelegate,
                         PaymentItemsDisplayCoordinatorDelegate,
                         PaymentMethodSelectionCoordinatorDelegate,
                         ShippingAddressSelectionCoordinatorDelegate,
                         ShippingOptionSelectionCoordinatorDelegate>
 
-// Creates a Payment Request coordinator that will present UI on
-// |viewController| using data available from |personalDataManager|.
-- (instancetype)initWithBaseViewController:(UIViewController*)viewController
-    NS_DESIGNATED_INITIALIZER;
-
 // 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.
@@ -89,6 +87,9 @@ class ChromeBrowserState;
 // Updates the payment details of the PaymentRequest and updates the UI.
 - (void)updatePaymentDetails:(web::PaymentDetails)paymentDetails;
 
+// Displays an error message. Invokes |callback| when the message is dismissed.
+- (void)displayErrorWithCallback:(ProceduralBlock)callback;
+
 // Called when a credit card has been successfully unmasked.
 - (void)fullCardRequestDidSucceedWithCard:(const autofill::CreditCard&)card
                                       CVC:(const base::string16&)cvc;