src/vs/workbench/services/dialogs/electron-sandbox/fileDialogService.ts/FileDialogService/shouldUseSimplified
class FileDialogService:	private shouldUseSimplified(schema: string): { useSimplified: boolean; isSetting: boolean } {
		const setting = (this.configurationService.getValue('files.simpleDialog.enable') === true);
		const newWindowSetting = (this.configurationService.getValue('window.openFilesInNewWindow') === 'on');
		return {
			useSimplified: ((schema !== Schemas.file) && (schema !== Schemas.vscodeUserData)) || setting,
			isSetting: newWindowSetting
		};
	}