Create DOM exceptions in the correct context.

Source/bindings/v8/CustomElementConstructorBuilder.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 254 matching lines @@
         throwUninformativeAndGenericTypeError(isolate);
         return;
     }
 
     Document* document = V8Document::toNative(info.Callee()->GetHiddenValue(V8HiddenPropertyName::customElementDocument(isolate)).As<v8::Object>());
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, namespaceURI, info.Callee()->GetHiddenValue(V8HiddenPropertyName::customElementNamespaceURI(isolate)));
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, tagName, info.Callee()->GetHiddenValue(V8HiddenPropertyName::customElementTagName(isolate)));
     v8::Handle<v8::Value> maybeType = info.Callee()->GetHiddenValue(V8HiddenPropertyName::customElementType(isolate));
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, type, maybeType);
 
-    ExceptionState es(info.GetIsolate());
+    ExceptionState es(info.Holder(), info.GetIsolate());
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     RefPtr<Element> element = document->createElementNS(namespaceURI, tagName, maybeType->IsNull() ? nullAtom : type, es);
     if (es.throwIfNeeded())
         return;
     v8SetReturnValueFast(info, element.release(), document);
 }
 
 } // namespace WebCore