Merge "Clean up BrightnessSynchronizer"

        }

    };

    private float mPreferredSettingValue;

    public BrightnessSynchronizer(Context context) {

        final BrightnessSyncObserver mBrightnessSyncObserver;

        mContext = context;

        mBrightnessSyncObserver = new BrightnessSyncObserver(mHandler);

        mBrightnessSyncObserver.startObserving();

    }

    /**

     * Starts brightnessSyncObserver to ensure that the float and int brightness values stay

     * in sync.

     * This also ensures that values are synchronized at system start up too.

     * So we force an update to the int value, since float is the source of truth. Fallback to int

     * value, if float is invalid. If both are invalid, use default float value from config.

     */

    public void startSynchronizing() {

        final BrightnessSyncObserver brightnessSyncObserver;

        brightnessSyncObserver = new BrightnessSyncObserver(mHandler);

        brightnessSyncObserver.startObserving();

        // It is possible for the system to start up with the int and float values not

        // synchronized. So we force an update to the int value, since float is the source

        // of truth. Fallback to int value, if float is invalid. If both are invalid, use default

        // float value from config.

        final float currentFloatBrightness = getScreenBrightnessFloat(context);

        final int currentIntBrightness = getScreenBrightnessInt(context);

        final float currentFloatBrightness = getScreenBrightnessFloat(mContext);

        final int currentIntBrightness = getScreenBrightnessInt(mContext);

        if (!Float.isNaN(currentFloatBrightness)) {

            updateBrightnessIntFromFloat(currentFloatBrightness);

                UserHandle.USER_CURRENT);

    }

    private float mPreferredSettingValue;

    /**

     * Updates the float setting based on a passed in int value. This is called whenever the int

     * setting changes. mWriteHistory keeps a record of the values that been written to the settings

        mBlanker = blanker;

        mContext = context;

        mBrightnessSynchronizer = new BrightnessSynchronizer(context);

        mBrightnessSynchronizer.startSynchronizing();

        mDisplayId = displayId;

        PowerManager pm =  context.getSystemService(PowerManager.class);