am 98b930ce: Cleaning up keyguard persistence threads when the pager is detached. (Bug 7460991)

        mBgPersistenceWorkerHandler = new Handler(mBgPersistenceWorkerThread.getLooper());

    }

    @Override

    protected void onDetachedFromWindow() {

        super.onDetachedFromWindow();

        // Clean up the persistence worker thread

        if (mBgPersistenceWorkerThread != null) {

            mBgPersistenceWorkerThread.quit();

        }

    }

    public void setViewStateManager(KeyguardViewStateManager viewStateManager) {

        mViewStateManager = viewStateManager;

    }