am a32900de: Frameworks/native: Fix unused parameter warning

    //

    // This is called without any lock held and can be called concurrently

    // by multiple threads.

    virtual void onFrameReplaced(const BufferItem& item) {} /* Asynchronous */

    virtual void onFrameReplaced(const BufferItem& /* item */) {} /* Asynchronous */

    // onBuffersReleased is called to notify the buffer consumer that the

    // BufferQueue has released its references to one or more GraphicBuffers