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

mojo/apps/js/bindings/waiting_callback.h

Index: mojo/apps/js/bindings/waiting_callback.h
diff --git a/mojo/apps/js/bindings/waiting_callback.h b/mojo/apps/js/bindings/waiting_callback.h
index 2e1653db5030c917d152f0bbcf93993eed6d68bd..9036c4e248607a556ae6760b0b49a5f94c65585f 100644
--- a/mojo/apps/js/bindings/waiting_callback.h
+++ b/mojo/apps/js/bindings/waiting_callback.h
@@ -5,6 +5,7 @@
 #ifndef MOJO_APPS_JS_BINDINGS_WAITING_CALLBACK_H_
 #define MOJO_APPS_JS_BINDINGS_WAITING_CALLBACK_H_
 
+#include "gin/handle.h"
 #include "gin/runner.h"
 #include "gin/wrappable.h"
 #include "mojo/public/bindings/lib/bindings_support.h"
@@ -15,7 +16,7 @@ namespace js {
 class WaitingCallback : public gin::Wrappable,
                         public BindingsSupport::AsyncWaitCallback {
  public:
-  static scoped_refptr<WaitingCallback> Create(
+  static gin::Handle<WaitingCallback> Create(
       v8::Isolate* isolate, v8::Handle<v8::Function> callback);
 
   static gin::WrapperInfo kWrapperInfo;