Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / modules / webmidi / MIDISuccessCallback.h

diff --git a/src/third_party/WebKit/Source/modules/webmidi/MIDISuccessCallback.h b/src/third_party/WebKit/Source/modules/webmidi/MIDISuccessCallback.h
index da88ca8..01275f4 100644 (file)
--- a/src/third_party/WebKit/Source/modules/webmidi/MIDISuccessCallback.h
+++ b/src/third_party/WebKit/Source/modules/webmidi/MIDISuccessCallback.h
@@ -32,14 +32,16 @@
 #define MIDISuccessCallback_h
 
 #include "modules/webmidi/MIDIOptions.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 class MIDIAccess;
 
-class MIDISuccessCallback {
+class MIDISuccessCallback : public GarbageCollectedFinalized<MIDISuccessCallback> {
 public:
     virtual ~MIDISuccessCallback() { }
+    virtual void trace(Visitor*) { }
     virtual void handleEvent(MIDIAccess*, bool) = 0;
 };