| Index: third_party/WebKit/Source/core/html/track/TrackBase.h
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| diff --git a/third_party/WebKit/Source/core/html/track/TrackBase.h b/third_party/WebKit/Source/core/html/track/TrackBase.h
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| index fd1f47f87908ff86d193144f1ce734d70bad930d..fd37f1dae30b8618c8eb4c44a76e4a3453d697a5 100644
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| --- a/third_party/WebKit/Source/core/html/track/TrackBase.h
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| +++ b/third_party/WebKit/Source/core/html/track/TrackBase.h
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| @@ -27,6 +27,7 @@
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|  #define TrackBase_h
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|  
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|  #include "core/CoreExport.h"
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| +#include "platform/Supplementable.h"
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|  #include "platform/heap/Handle.h"
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|  #include "public/platform/WebMediaPlayer.h"
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|  #include "wtf/RefCounted.h"
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| @@ -36,7 +37,7 @@ namespace blink {
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|  
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|  class HTMLMediaElement;
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|  
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| -class CORE_EXPORT TrackBase : public GarbageCollectedMixin {
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| +class CORE_EXPORT TrackBase : public Supplementable<TrackBase> {
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|  public:
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|      virtual ~TrackBase();
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|  
 | 
| 
 |