Add notification atom to atoms.proto

        FingerprintAcquired fingerprint_acquired = 87;

        FingerprintAuthenticated fingerprint_authenticated = 88;

        FingerprintErrorOccurred fingerprint_error_occurred = 89;

        Notification notification = 90;

    }

    // Pulled events will start at field 10000.

    // The type of error.

    optional Error error = 3;

}

message Notification {

    // Type of notification event.

    enum Type {

        TYPE_UNKNOWN = 0;

        // Notification became visible to the user.

        TYPE_OPEN = 1;

        // Notification became hidden.

        TYPE_CLOSE = 2;

        // Notification switched to detail mode.

        TYPE_DETAIL = 3;

        // Notification was clicked.

        TYPE_ACTION = 4;

        // Notification was dismissed.

        TYPE_DISMISS = 5;

        // Notification switched to summary mode. The enum value of 14 is to

        // match that of metrics_constants.

        TYPE_COLLAPSE = 14;

    }

    optional Type type = 1;

    // Package name associated with the notification.

    optional string package_name = 2;

    // Tag associated with notification.

    optional string tag = 3;

    // Application-supplied ID associated with the notification.

    optional int32 id = 4;

    // Index of notification in the notification panel.

    optional int32 shade_index = 5;

    // The number of notifications in the notification panel.

    optional int32 shade_count = 6;

    // Importance for the notification.

    optional int32 importance = 7;

    // ID for the notification channel.

    optional int32 channel_id = 8;

    // Importance for the notification channel.

    optional int32 channel_importance = 9;

    // Whether notification was a group summary.

    optional bool group_summary = 10;

    // Time since notification was created in milliseconds.

    optional int64 since_create_millis = 11;

    // Time since notification was interrupted in milliseconds.

    optional int64 since_interruption_millis = 12;

    // Time since notification was updated in milliseconds.

    optional int64 since_update_millis = 13;

    // Time since notification was visible in milliseconds.

    optional int64 since_visible_millis = 14;

}

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// Pulled atoms below this line //

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