Merge "Remove interface for Telephony."

                "device_identifier_access_restrictions_disabled";

    }

    /**

     * Telephony related properties definitions.

     *

     * @hide

     */

    public interface Telephony {

        String NAMESPACE = "telephony";

        /**

         * Ringer ramping time in milliseconds.

         */

        String RAMPING_RINGER_DURATION = "ramping_ringer_duration";

        /**

         * Whether to apply ramping ringer on incoming phone calls.

         */

        String RAMPING_RINGER_ENABLED = "ramping_ringer_enabled";

        /**

         * Vibration time in milliseconds before ramping ringer starts.

         */

        String RAMPING_RINGER_VIBRATION_DURATION = "ramping_ringer_vibration_duration";

    }

    private static final Object sLock = new Object();

    @GuardedBy("sLock")

    private static ArrayMap<OnPropertyChangedListener, Pair<String, Executor>> sSingleListeners =