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

gin/function_template.h.pump

Index: gin/function_template.h.pump
diff --git a/gin/function_template.h.pump b/gin/function_template.h.pump
index 6b6ffc57e4ac57db98c530affd689f3cef07d36e..7324db8e65a067dd2cf6185c1d9332a2b8f9c1a0 100644
--- a/gin/function_template.h.pump
+++ b/gin/function_template.h.pump
@@ -18,6 +18,7 @@ $var MAX_ARITY = 4
 #include "base/logging.h"
 #include "gin/arguments.h"
 #include "gin/converter.h"
+#include "gin/handle.h"
 #include "gin/public/gin_embedders.h"
 #include "gin/public/wrapper_info.h"
 #include "gin/wrappable.h"
@@ -174,7 +175,7 @@ v8::Local<v8::FunctionTemplate> CreateFunctionTemplate(
     v8::Isolate* isolate,
     const base::Callback<R($for ARG , [[P$(ARG)]])> callback) {
   typedef internal::CallbackHolder<R($for ARG , [[P$(ARG)]])> HolderT;
-  scoped_refptr<HolderT> holder(new HolderT(callback));
+  gin::Handle<HolderT> holder = CreateHandle(isolate, new HolderT(callback));
   return v8::FunctionTemplate::New(
       isolate,
       &internal::DispatchToCallback<R$for ARG [[, P$(ARG)]]>,