Set correct Function.length on overloaded methods

Source/bindings/templates/methods.cpp

Index: Source/bindings/templates/methods.cpp
diff --git a/Source/bindings/templates/methods.cpp b/Source/bindings/templates/methods.cpp
index f1f0fdb5593b5155d4e13acf141d648f200f3ca3..830caceb8c61298e024c7e9157f8e0bd603a11d5 100644
--- a/Source/bindings/templates/methods.cpp
+++ b/Source/bindings/templates/methods.cpp
@@ -430,7 +430,7 @@ static void {{method.name}}OriginSafeMethodGetter{{world_suffix}}(const v8::Prop
     static int domTemplateKey; // This address is used for a key to look up the dom template.
     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
     {# FIXME: 1 case of [DoNotCheckSignature] in Window.idl may differ #}
-    v8::Handle<v8::FunctionTemplate> privateTemplate = data->domTemplate(&domTemplateKey, {{cpp_class}}V8Internal::{{method.name}}MethodCallback{{world_suffix}}, v8Undefined(), {{signature}}, {{method.number_of_required_or_variadic_arguments}});
+    v8::Handle<v8::FunctionTemplate> privateTemplate = data->domTemplate(&domTemplateKey, {{cpp_class}}V8Internal::{{method.name}}MethodCallback{{world_suffix}}, v8Undefined(), {{signature}}, {{method.length}});
 
     v8::Handle<v8::Object> holder = {{v8_class}}::findInstanceInPrototypeChain(info.This(), isolate);
     if (holder.IsEmpty()) {
@@ -442,7 +442,7 @@ static void {{method.name}}OriginSafeMethodGetter{{world_suffix}}(const v8::Prop
     {{cpp_class}}* impl = {{v8_class}}::toNative(holder);
     if (!BindingSecurity::shouldAllowAccessToFrame(isolate, impl->frame(), DoNotReportSecurityError)) {
         static int sharedTemplateKey; // This address is used for a key to look up the dom template.
-        v8::Handle<v8::FunctionTemplate> sharedTemplate = data->domTemplate(&sharedTemplateKey, {{cpp_class}}V8Internal::{{method.name}}MethodCallback{{world_suffix}}, v8Undefined(), {{signature}}, {{method.number_of_required_or_variadic_arguments}});
+        v8::Handle<v8::FunctionTemplate> sharedTemplate = data->domTemplate(&sharedTemplateKey, {{cpp_class}}V8Internal::{{method.name}}MethodCallback{{world_suffix}}, v8Undefined(), {{signature}}, {{method.length}});
         v8SetReturnValue(info, sharedTemplate->GetFunction());
         return;
     }