| Index: Source/core/html/track/AudioTrack.h | 
| diff --git a/Source/core/html/track/AudioTrack.h b/Source/core/html/track/AudioTrack.h | 
| index d084a441642c7a899df16d047efae146ef4429db..db5bae8aab81accdc27bb3854a76e3baaff471e4 100644 | 
| --- a/Source/core/html/track/AudioTrack.h | 
| +++ b/Source/core/html/track/AudioTrack.h | 
| @@ -30,11 +30,14 @@ public: | 
| static const AtomicString& translationKeyword(); | 
| static const AtomicString& commentaryKeyword(); | 
|  | 
| +    static bool isValidKindKeyword(const AtomicString&); | 
| +    static bool isValidKindKeyword(const String&); | 
| + | 
| private: | 
| AudioTrack(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool enabled); | 
|  | 
| // TrackBase | 
| -    virtual bool isValidKind(const AtomicString&) const override; | 
| +    virtual bool isValidKind(const AtomicString& kind) const override { return isValidKindKeyword(kind); } | 
| virtual AtomicString defaultKind() const override; | 
|  | 
| bool m_enabled; | 
|  |