initialize v8::Private with v8::String

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index dd8f2685bc37115638f5332ddbefd42a79c16cea..73a1cc637fb30572f938ea6f7daa2476b6f2597e 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1933,8 +1933,8 @@ class V8_EXPORT Private : public Data {
   Local<Value> Name() const;
 
   // Create a private symbol. If data is not NULL, it will be the print name.
-  static Local<Private> New(
-      Isolate *isolate, const char* data = NULL, int length = -1);
+  static Local<Private> New(Isolate *isolate,
+                            Local<String> name = Local<String>());
 
  private:
   Private();