Avoid calling v8::Isolate::GetCurrent() twice in V8HiddenPropertyName

Source/bindings/v8/V8HiddenPropertyName.cpp

Index: Source/bindings/v8/V8HiddenPropertyName.cpp
diff --git a/Source/bindings/v8/V8HiddenPropertyName.cpp b/Source/bindings/v8/V8HiddenPropertyName.cpp
index 2da72d36f5ec031ffeeea2b10996ae3da4c54d48..776de512ade033d55defe851919672914413c8da 100644
--- a/Source/bindings/v8/V8HiddenPropertyName.cpp
+++ b/Source/bindings/v8/V8HiddenPropertyName.cpp
@@ -49,7 +49,7 @@ v8::Handle<v8::String> V8HiddenPropertyName::name() \
     v8::Isolate* isolate = v8::Isolate::GetCurrent(); \
     V8HiddenPropertyName* hiddenPropertyName = V8PerIsolateData::from(isolate)->hiddenPropertyName(); \
     if (hiddenPropertyName->m_##name.IsEmpty()) { \
-        createString(V8_HIDDEN_PROPERTY_PREFIX V8_AS_STRING(name), &(hiddenPropertyName->m_##name)); \
+        createString(V8_HIDDEN_PROPERTY_PREFIX V8_AS_STRING(name), &(hiddenPropertyName->m_##name), isolate); \
     } \
     return v8::Local<v8::String>::New(isolate, hiddenPropertyName->m_##name); \
 }
@@ -71,9 +71,8 @@ void V8HiddenPropertyName::setNamedHiddenReference(v8::Handle<v8::Object> parent
     parent->SetHiddenValue(hiddenReferenceName(name, strlen(name)), child);
 }
 
-void V8HiddenPropertyName::createString(const char* key, v8::Persistent<v8::String>* handle)
+void V8HiddenPropertyName::createString(const char* key, v8::Persistent<v8::String>* handle, v8::Isolate* isolate)
 {
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
     v8::HandleScope scope(isolate);
     handle->Reset(isolate, v8::String::NewSymbol(key));
 }