Merge "Update sideband stream when BufferStateLayer has receive a buffer" into sc-dev

}

bool BufferStateLayer::latchSidebandStream(bool& recomputeVisibleRegions) {

    if (mSidebandStreamChanged.exchange(false)) {

    // We need to update the sideband stream if the layer has both a buffer and a sideband stream.

    const bool updateSidebandStream = hasFrameUpdate() && mSidebandStream.get();

    if (mSidebandStreamChanged.exchange(false) || updateSidebandStream) {

        const State& s(getDrawingState());

        // mSidebandStreamChanged was true

        mSidebandStream = s.sidebandStream;