Print proper debug message in case of change event timeout.

third_party/WebKit/Source/modules/payments/PaymentRequest.cpp

 // 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.
 
 #include "modules/payments/PaymentRequest.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/JSONValuesForV8.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
@@ skipping 438 matching lines @@
         clearResolversAndCloseMojoConnection();
         return;
     }
 
     if (m_options.requestShipping())
         m_shippingOption = getSelectedShippingOption(details);
 
     m_paymentProvider->UpdateWith(mojom::blink::PaymentDetails::From(details));
 }
 
-void PaymentRequest::onUpdatePaymentDetailsFailure(const ScriptValue& error)
+void PaymentRequest::onUpdatePaymentDetailsFailure(const String& error)
 {
-    String message;
-    error.toString(message);
-
     if (m_showResolver)
-        m_showResolver->reject(DOMException::create(AbortError, message));
+        m_showResolver->reject(DOMException::create(AbortError, error));
     if (m_completeResolver)
-        m_completeResolver->reject(DOMException::create(AbortError, message));
+        m_completeResolver->reject(DOMException::create(AbortError, error));
     clearResolversAndCloseMojoConnection();
 }
 
 DEFINE_TRACE(PaymentRequest)
 {
     visitor->trace(m_details);
     visitor->trace(m_options);
     visitor->trace(m_shippingAddress);
     visitor->trace(m_showResolver);
     visitor->trace(m_completeResolver);
@@ skipping 195 matching lines @@
 {
     m_completeResolver.clear();
     m_showResolver.clear();
     m_abortResolver.clear();
     if (m_clientBinding.is_bound())
         m_clientBinding.Close();
     m_paymentProvider.reset();
 }
 
 } // namespace blink