public:
virtual ~JITToDFGDeferredCompilationCallback();
- static PassRefPtr<JITToDFGDeferredCompilationCallback> create();
+ static Ref<JITToDFGDeferredCompilationCallback> create();
virtual void compilationDidBecomeReadyAsynchronously(CodeBlock*) override;
virtual void compilationDidComplete(CodeBlock*, CompilationResult) override;