[wrapper-tracing] Support for incrementally tracing ScopedPersistent

third_party/WebKit/Source/bindings/templates/callback_function.h.tmpl

 {% filter format_blink_cpp_source_code %}
 
 {% include 'copyright_block.txt' %}
 
 #ifndef {{cpp_class}}_h
 #define {{cpp_class}}_h
 
 {% for filename in header_includes %}
 #include "{{filename}}"
 {% endfor %}
@@ skipping 24 matching lines @@
 
   void setWrapperReference(v8::Isolate* isolate, const v8::Persistent<v8::Object>& wrapper) {
     DCHECK(!m_callback.isEmpty());
     m_callback.setReference(wrapper, isolate);
   }
 
  private:
   {{cpp_class}}(ScriptState*, v8::Local<v8::Function>);
 
   RefPtr<ScriptState> m_scriptState;
-  ScopedPersistent<v8::Function> m_callback;
+  TraceWrapperV8Reference<v8::Function> m_callback;
 };
 
 }  // namespace blink
 
 #endif  // {{cpp_class}}_h
 
 {% endfilter %}{# format_blink_cpp_source_code #}