Merge "Add Connection Event for supplementary service notifications."

    public static final String EVENT_CALL_FORWARDED =

            "android.telephony.event.EVENT_CALL_FORWARDED";

    /**

     * {@link android.telecom.Connection} event used to indicate that a supplementary service

     * notification has been received.

     * <p>

     * Sent via {@link android.telecom.Connection#sendConnectionEvent(String, Bundle)}.

     * The {@link Bundle} parameter is expected to include the following extras:

     * <ul>

     *     <li>{@link #EXTRA_NOTIFICATION_TYPE} - the notification type.</li>

     *     <li>{@link #EXTRA_NOTIFICATION_CODE} - the notification code.</li>

     *     <li>{@link #EXTRA_NOTIFICATION_MESSAGE} - human-readable message associated with the

     *     supplementary service notification.</li>

     * </ul>

     * @hide

     */

    public static final String EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION =

            "android.telephony.event.EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION";

    /**

     * Integer extra key used with {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION} which indicates

     * the type of supplementary service notification which occurred.

     * Will be either

     * {@link com.android.internal.telephony.gsm.SuppServiceNotification#NOTIFICATION_TYPE_CODE_1}

     * or

     * {@link com.android.internal.telephony.gsm.SuppServiceNotification#NOTIFICATION_TYPE_CODE_2}

     * <p>

     * Set in the extras for the {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION} connection event.

     * @hide

     */

    public static final String EXTRA_NOTIFICATION_TYPE =

            "android.telephony.extra.NOTIFICATION_TYPE";

    /**

     * Integer extra key used with {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION} which indicates

     * the supplementary service notification which occurred.

     * <p>

     * Depending on the {@link #EXTRA_NOTIFICATION_TYPE}, the code will be one of the {@code CODE_*}

     * codes defined in {@link com.android.internal.telephony.gsm.SuppServiceNotification}.

     * <p>

     * Set in the extras for the {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION} connection event.

     * @hide

     */

    public static final String EXTRA_NOTIFICATION_CODE =

            "android.telephony.extra.NOTIFICATION_CODE";

    /**

     * {@link CharSequence} extra key used with {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION}

     * which contains a human-readable message which can be displayed to the user for the

     * supplementary service notification.

     * <p>

     * Set in the extras for the {@link #EVENT_SUPPLEMENTARY_SERVICE_NOTIFICATION} connection event.

     * @hide

     */

    public static final String EXTRA_NOTIFICATION_MESSAGE =

            "android.telephony.extra.NOTIFICATION_MESSAGE";

    /* Visual voicemail protocols */

    /**