src/vs/workbench/common/notifications.ts/NotificationViewItem/setProgress
class NotificationViewItem:	private setProgress(progress: INotificationProgressProperties): void {
		if (progress.infinite) {
			this.progress.infinite();
		} else if (progress.total) {
			this.progress.total(progress.total);

			if (progress.worked) {
				this.progress.worked(progress.worked);
			}
		}
	}