am 5878444f: SurfaceFlinger: Listen to HWC invalidate

        case MessageQueue::INVALIDATE: {

            bool refreshNeeded = handleMessageTransaction();

            refreshNeeded |= handleMessageInvalidate();

            refreshNeeded |= mRepaintEverything;

            if (refreshNeeded) {

                // Signal a refresh if a transaction modified the window state or if

                // a new buffer was latched

                // Signal a refresh if a transaction modified the window state,

                // a new buffer was latched, or if HWC has requested a full

                // repaint

                signalRefresh();

            }

            break;