gin::Wrappable shouldn't inherit from base::RefCounted

mojo/apps/js/bindings/waiting_callback.cc

Index: mojo/apps/js/bindings/waiting_callback.cc
diff --git a/mojo/apps/js/bindings/waiting_callback.cc b/mojo/apps/js/bindings/waiting_callback.cc
index 2832685318c973359ec799d6b7de0b30eaeac883..2c8179f93a1eb76f1a5aa0bcd04e1d3f709408c1 100644
--- a/mojo/apps/js/bindings/waiting_callback.cc
+++ b/mojo/apps/js/bindings/waiting_callback.cc
@@ -30,9 +30,9 @@ WaitingCallback::~WaitingCallback() {
   DCHECK(!wait_id_) << "Waiting callback was destroyed before being cancelled.";
 }
 
-scoped_refptr<WaitingCallback> WaitingCallback::Create(
+gin::Handle<WaitingCallback> WaitingCallback::Create(
     v8::Isolate* isolate, v8::Handle<v8::Function> callback) {
-  return make_scoped_refptr(new WaitingCallback(isolate, callback));
+  return CreateHandle(isolate, new WaitingCallback(isolate, callback));
 }
 
 gin::WrapperInfo WaitingCallback::kWrapperInfo = { gin::kEmbedderNativeGin };