src/vs/base/browser/ui/dialog/dialog.ts/Dialog/getIconAriaLabel
class Dialog:	private getIconAriaLabel(): string {
		let typeLabel = nls.localize('dialogInfoMessage', 'Info');
		switch (this.options.type) {
			case 'error':
				nls.localize('dialogErrorMessage', 'Error');
				break;
			case 'warning':
				nls.localize('dialogWarningMessage', 'Warning');
				break;
			case 'pending':
				nls.localize('dialogPendingMessage', 'In Progress');
				break;
			case 'none':
			case 'info':
			case 'question':
			default:
				break;
		}

		return typeLabel;
	}