Add support for [Constructor, Custom=Wrap]

Source/bindings/tests/results/V8TestInterfaceNamedConstructor.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 114 matching lines @@
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, stringArg, info[0]);
     V8TRYCATCH_VOID(bool, defaultUndefinedOptionalBooleanArg, info[1]->BooleanValue());
     V8TRYCATCH_EXCEPTION_VOID(int, defaultUndefinedOptionalLongArg, toInt32(info[2], exceptionState), exceptionState);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, defaultUndefinedOptionalStringArg, info[3]);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, defaultNullStringOptionalstringArg, argumentOrNull(info, 4));
     RefPtr<TestInterfaceNamedConstructor> impl = TestInterfaceNamedConstructor::createForJSConstructor(*document, stringArg, defaultUndefinedOptionalBooleanArg, defaultUndefinedOptionalLongArg, defaultUndefinedOptionalStringArg, defaultNullStringOptionalstringArg, exceptionState);
-    v8::Handle<v8::Object> wrapper = info.Holder();
     if (exceptionState.throwIfNeeded())
         return;
 
+    v8::Handle<v8::Object> wrapper = info.Holder();
     V8DOMWrapper::associateObjectWithWrapper<V8TestInterfaceNamedConstructor>(impl.release(), &V8TestInterfaceNamedConstructorConstructor::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
     v8SetReturnValue(info, wrapper);
 }
 
 v8::Handle<v8::FunctionTemplate> V8TestInterfaceNamedConstructorConstructor::domTemplate(v8::Isolate* isolate)
 {
     static int domTemplateKey; // This address is used for a key to look up the dom template.
     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
     v8::Local<v8::FunctionTemplate> result = data->existingDOMTemplate(&domTemplateKey);
     if (!result.IsEmpty())
@@ skipping 85 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceNamedConstructor* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore