Merge "Delay callback from printerRegistry after Constr." into nyc-dev

        // the first batch of results which will be delivered

        // after reading historical data. This should be pretty

        // fast, so just wait before showing the UI.

        mPrinterRegistry = new PrinterRegistry(PrintActivity.this,

                new Runnable() {

            @Override

            public void run() {

                onPrinterRegistryReady(documentAdapter);

            }

        mPrinterRegistry = new PrinterRegistry(PrintActivity.this, () -> {

            (new Handler(getMainLooper())).post(() -> onPrinterRegistryReady(documentAdapter));

        }, LOADER_ID_PRINT_REGISTRY, LOADER_ID_PRINT_REGISTRY_INT);

    }