Make length property return useful values for DOM bindings functions

Source/bindings/tests/results/V8TestInterface.cpp

Index: Source/bindings/tests/results/V8TestInterface.cpp
diff --git a/Source/bindings/tests/results/V8TestInterface.cpp b/Source/bindings/tests/results/V8TestInterface.cpp
index 3ded059c78bf291962c4a39c2e3dde1120bf541a..934ab7c8a710fdd08110578c21bd3a2d4915f3de 100644
--- a/Source/bindings/tests/results/V8TestInterface.cpp
+++ b/Source/bindings/tests/results/V8TestInterface.cpp
@@ -27,6 +27,7 @@
 #include "ExceptionCode.h"
 #include "Frame.h"
 #include "RuntimeEnabledFeatures.h"
+#include "ScriptController.h"
 #include "TestSupplemental.h"
 #include "V8Binding.h"
 #include "V8DOMWrapper.h"
@@ -383,10 +384,10 @@ static const V8DOMConfiguration::BatchedAttribute V8TestInterfaceAttrs[] = {
 
 static const V8DOMConfiguration::BatchedMethod V8TestInterfaceMethods[] = {
 #if ENABLE(Condition11) || ENABLE(Condition12)
-    {"supplementalMethod1", TestInterfaceV8Internal::supplementalMethod1MethodCallback, 0},
+    {"supplementalMethod1", TestInterfaceV8Internal::supplementalMethod1MethodCallback, 0, 0},
 #endif
 #if ENABLE(Condition11) || ENABLE(Condition12)
-    {"supplementalMethod3", TestInterfaceV8Internal::supplementalMethod3MethodCallback, 0},
+    {"supplementalMethod3", TestInterfaceV8Internal::supplementalMethod3MethodCallback, 0, 0},
 #endif
 };
 
@@ -428,6 +429,7 @@ static v8::Persistent<v8::FunctionTemplate> ConfigureV8TestInterfaceTemplate(v8:
         V8TestInterfaceMethods, WTF_ARRAY_LENGTH(V8TestInterfaceMethods), isolate, currentWorldType);
     UNUSED_PARAM(defaultSignature); // In some cases, it will not be used.
     desc->SetCallHandler(V8TestInterface::constructorCallback);
+    desc->SetLength(1);
     v8::Local<v8::ObjectTemplate> instance = desc->InstanceTemplate();
     v8::Local<v8::ObjectTemplate> proto = desc->PrototypeTemplate();
     UNUSED_PARAM(instance); // In some cases, it will not be used.