src/vs/css.ts/load
export function load(name: string, req: AMDLoader.IRelativeRequire, load: AMDLoader.IPluginLoadCallback, config: AMDLoader.IConfigurationOptions): void {
	config = config || {};
	const cssConfig = <ICSSPluginConfig>(config['vs/css'] || {});

	if (cssConfig.disabled) {
		// the plugin is asked to not create any style sheets
		load({});
		return;
	}

	const cssUrl = req.toUrl(name + '.css');
	loadCSS(name, cssUrl, () => {
		load({});
	}, (err: any) => {
		if (typeof load.error === 'function') {
			load.error('Could not find ' + cssUrl + '.');
		}
	});
}