| Index: Source/core/html/track/TextTrack.idl
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| diff --git a/Source/core/html/track/TextTrack.idl b/Source/core/html/track/TextTrack.idl
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| index 0f43f99f57d956c7cc2e00d1e0f581e385e66866..75b8558abf0cb14545f528b29d7784bfb7fc7a02 100644
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| --- a/Source/core/html/track/TextTrack.idl
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| +++ b/Source/core/html/track/TextTrack.idl
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| @@ -28,6 +28,7 @@ enum TextTrackKind { "subtitles",  "captions",  "descriptions",  "chapters",  "m
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|  
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|  [
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|      SetWrapperReferenceFrom=owner,
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| +    TypeChecking=Interface,
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|  ] interface TextTrack : EventTarget {
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|      readonly attribute TextTrackKind kind;
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|      readonly attribute DOMString label;
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| 
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