X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Fthird_party%2FWebKit%2FSource%2Fmodules%2Fwebmidi%2FMIDISuccessCallback.h;h=01275f444ee4641e7786b2110c73559e4d57f292;hb=3545e9f2671f595d2a2f3ee75ca0393b01e35ef6;hp=da88ca83a14cec5c11682afb55ebc00173cd6916;hpb=7d210d4c7e9ba36e635eabc5b5780495f8a63292;p=platform%2Fframework%2Fweb%2Fcrosswalk.git

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
--- 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;
 };