initialize v8::Private with v8::String

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index c5c932b7516cc70738ad918a9311dabe1e985427..d79e6c9d7db7b70debbe4ee6a2eb21ca43c7749d 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -2844,7 +2844,8 @@ THREADED_TEST(PrivateProperties) {
 
   v8::Local<v8::Object> obj = v8::Object::New(isolate);
   v8::Local<v8::Private> priv1 = v8::Private::New(isolate);
-  v8::Local<v8::Private> priv2 = v8::Private::New(isolate, "my-private");
+  v8::Local<v8::Private> priv2 = v8::Private::New(isolate,
+                                                  v8_str("my-private"));
 
   CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);