Remove dead code in libmedia

        };

    };

    /* These are static methods to control the system-wide AudioFlinger

     * only privileged processes can have access to them

     */

//    static status_t setMasterMute(bool mute);

    /* As a convenience, if a callback is supplied, a handler thread

     * is automatically created with the appropriate priority. This thread

     * invokes the callback when a new buffer becomes ready or an overrun condition occurs.

        friend class AudioRecord;

        virtual bool        threadLoop();

        virtual status_t    readyToRun();

        virtual void        onFirstRef() {}

        AudioRecord& mReceiver;

    };

    private:

        friend class AudioTrack;

        virtual bool        threadLoop();

        virtual status_t    readyToRun();

        virtual void        onFirstRef();

        AudioTrack& mReceiver;

        ~AudioTrackThread();

        Mutex               mMyLock;    // Thread::mLock is private

    private:

        friend class Visualizer;

        virtual bool        threadLoop();

        virtual status_t    readyToRun();

        virtual void        onFirstRef();

        Visualizer& mReceiver;

        Mutex       mLock;

        uint32_t mSleepTimeUs;

    return true;

}

status_t AudioTrack::AudioTrackThread::readyToRun()

{

    return NO_ERROR;

}

void AudioTrack::AudioTrackThread::onFirstRef()

{

}

void AudioTrack::AudioTrackThread::requestExit()

{

    // must be in this order to avoid a race condition

    return false;

}

status_t Visualizer::CaptureThread::readyToRun()

{

    return NO_ERROR;

}

void Visualizer::CaptureThread::onFirstRef()

{

}

}; // namespace android