[Payment Request] CanMakePayment

ios/chrome/browser/ui/payments/js_payment_request_manager.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_UI_PAYMENTS_JS_PAYMENT_REQUEST_MANAGER_H_
 #define IOS_CHROME_BROWSER_UI_PAYMENTS_JS_PAYMENT_REQUEST_MANAGER_H_
 
 #include "base/strings/string16.h"
 #include "ios/chrome/browser/procedural_block_types.h"
 #import "ios/web/public/web_state/js/crw_js_injection_manager.h"
@@ skipping 33 matching lines @@
                                (ProceduralBlockWithBool)completionHandler;
 
 // Resolves the JavaScript promise returned by the call to canMakePayment on the
 // current PaymentRequest, with the specified |value|. If |completionHandler| is
 // not nil, it will be invoked with YES after the operation has completed
 // successfully or with NO otherwise.
 - (void)resolveCanMakePaymentPromiseWithValue:(bool)value
                             completionHandler:
                                 (ProceduralBlockWithBool)completionHandler;
 
+// Rejects the JavaScript promise returned by the call to canMakePayment on the
+// current PaymentRequest, with the supplied |errorMessage|. If
+// |completionHandler| is not nil, it will be invoked with YES after the
+// operation has completed successfully or with NO otherwise.
+- (void)rejectCanMakePaymentPromiseWithErrorMessage:(NSString*)errorMessage
+                                  completionHandler:(ProceduralBlockWithBool)
+                                                        completionHandler;
+
 // Resolves the promise returned by PaymentRequest.prototype.abort.
 - (void)resolveAbortPromiseWithCompletionHandler:
     (ProceduralBlockWithBool)completionHandler;
 
 // Resolves the JavaScript promise associated with the current PaymentResponse.
 // If |completionHandler| is not nil, it will be invoked with YES after the
 // operation has completed successfully or with NO otherwise.
 - (void)resolveResponsePromiseWithCompletionHandler:
     (ProceduralBlockWithBool)completionHandler;
 
 // Updates the shippingAddress property on the PaymentRequest object and
 // dispatches a shippingaddresschange event.
 - (void)updateShippingAddress:(const payments::PaymentAddress&)shippingAddress
             completionHandler:(ProceduralBlockWithBool)completionHanlder;
 
 // Updates the shippingOption property on the PaymentRequest object and
 // dispatches a shippingoptionchange event.
 - (void)updateShippingOption:(const web::PaymentShippingOption&)shippingOption
            completionHandler:(ProceduralBlockWithBool)completionHanlder;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_PAYMENTS_JS_PAYMENT_REQUEST_MANAGER_H_