Fix system server crash when uninstalling paid LS widget that has been added (issue 8647398)

    @Override

    public void cleanUp() {

        // Make sure we let go of all widgets and their package contexts promptly. If we don't do

        // this, and the associated application is uninstalled, it can cause a soft reboot.

        int count = mAppWidgetContainer.getChildCount();

        for (int i = 0; i < count; i++) {

            KeyguardWidgetFrame frame = mAppWidgetContainer.getWidgetPageAt(i);

            frame.removeAllViews();

        }

    }

    /**

        return !configDisabled || isTestHarness || fileOverride;

    }

    public void goToUserSwitcher() {

        mAppWidgetContainer.setCurrentPage(getWidgetPosition(R.id.keyguard_multi_user_selector));

    }