| Index: third_party/WebKit/Source/modules/mediasource/SourceBuffer.h
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| diff --git a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.h b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.h
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| index bfb665e04795faaa8465054ca50ecf69c63bc58e..81ef2ad0d1a56ab62b16cb9e99dc1edbdc612293 100644
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| --- a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.h
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| +++ b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.h
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| @@ -116,7 +116,7 @@ public:
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|      const AtomicString& interfaceName() const override;
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|  
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|      // WebSourceBufferClient interface
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| -    WebVector<WebMediaPlayer::TrackId> initializationSegmentReceived(const WebVector<MediaTrackInfo>&) override;
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| +    bool initializationSegmentReceived(const WebVector<MediaTrackInfo>&) override;
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|  
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|      DECLARE_VIRTUAL_TRACE();
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|  
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| @@ -153,6 +153,10 @@ private:
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|  
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|      void removeMediaTracks();
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|  
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| +    const TrackDefault* getTrackDefault(const AtomicString& trackType, const AtomicString& byteStreamTrackID) const;
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| +    AtomicString defaultTrackLabel(const AtomicString& trackType, const AtomicString& byteStreamTrackID) const;
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| +    AtomicString defaultTrackLanguage(const AtomicString& trackType, const AtomicString& byteStreamTrackID) const;
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| +
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|      // FileReaderLoaderClient interface
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|      void didStartLoading() override;
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|      void didReceiveDataForClient(const char* data, unsigned dataLength) override;
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| @@ -169,6 +173,7 @@ private:
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|      double m_timestampOffset;
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|      Member<AudioTrackList> m_audioTracks;
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|      Member<VideoTrackList> m_videoTracks;
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| +    bool m_activeTrack = false;
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|      double m_appendWindowStart;
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|      double m_appendWindowEnd;
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|      bool m_firstInitializationSegmentReceived;
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| 
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