Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / modules / filesystem / MetadataCallback.h

diff --git a/src/third_party/WebKit/Source/modules/filesystem/MetadataCallback.h b/src/third_party/WebKit/Source/modules/filesystem/MetadataCallback.h
index c61f058..367db6d 100644 (file)
--- a/src/third_party/WebKit/Source/modules/filesystem/MetadataCallback.h
+++ b/src/third_party/WebKit/Source/modules/filesystem/MetadataCallback.h
@@ -31,13 +31,16 @@
 #ifndef MetadataCallback_h
 #define MetadataCallback_h
 
+#include "platform/heap/Handle.h"
+
 namespace blink {
 
 class Metadata;
 
-class MetadataCallback {
+class MetadataCallback : public GarbageCollectedFinalized<MetadataCallback> {
 public:
     virtual ~MetadataCallback() { }
+    virtual void trace(Visitor*) { }
     virtual void handleEvent(Metadata*) = 0;
 };