#ifndef FileWriterCallback_h
#define FileWriterCallback_h
+#include "platform/heap/Handle.h"
+
namespace blink {
class FileWriter;
-class FileWriterCallback {
+class FileWriterCallback : public GarbageCollectedFinalized<FileWriterCallback> {
public:
virtual ~FileWriterCallback() { }
+ virtual void trace(Visitor*) { }
virtual void handleEvent(FileWriter*) = 0;
};