Make length property return useful values for DOM bindings functions

Source/bindings/tests/results/V8TestEventConstructor.cpp

 /*
     This file is part of the WebKit open source project.
     This file has been generated by generate-bindings.pl. DO NOT MODIFY!
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
@@ skipping 129 matching lines @@
 static v8::Persistent<v8::FunctionTemplate> ConfigureV8TestEventConstructorTemplate(v8::Persistent<v8::FunctionTemplate> desc, v8::Isolate* isolate, WrapperWorldType currentWorldType)
 {
     desc->ReadOnlyPrototype();
 
     v8::Local<v8::Signature> defaultSignature;
     defaultSignature = V8DOMConfiguration::configureTemplate(desc, "TestEventConstructor", v8::Persistent<v8::FunctionTemplate>(), V8TestEventConstructor::internalFieldCount,
         V8TestEventConstructorAttrs, WTF_ARRAY_LENGTH(V8TestEventConstructorAttrs),
         0, 0, isolate, currentWorldType);
     UNUSED_PARAM(defaultSignature); // In some cases, it will not be used.
     desc->SetCallHandler(V8TestEventConstructor::constructorCallback);
+    desc->SetLength(1);
     
 
     // Custom toString template
     desc->Set(v8::String::NewSymbol("toString"), V8PerIsolateData::current()->toStringTemplate());
     return desc;
 }
 
 v8::Persistent<v8::FunctionTemplate> V8TestEventConstructor::GetTemplate(v8::Isolate* isolate, WrapperWorldType currentWorldType)
 {
     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
@@ skipping 37 matching lines @@
     installPerContextProperties(wrapper, impl.get(), isolate);
     V8DOMWrapper::associateObjectWithWrapper(impl, &info, wrapper, isolate, hasDependentLifetime ? WrapperConfiguration::Dependent : WrapperConfiguration::Independent);
     return wrapper;
 }
 void V8TestEventConstructor::derefObject(void* object)
 {
     static_cast<TestEventConstructor*>(object)->deref();
 }
 
 } // namespace WebCore