src/vs/editor/browser/view/viewOverlays.ts/ContentViewOverlays/constructor
class ContentViewOverlays:	constructor(context: ViewContext) {
		super(context);
		const options = this._context.configuration.options;
		const layoutInfo = options.get(EditorOption.layoutInfo);
		this._contentWidth = layoutInfo.contentWidth;

		this.domNode.setHeight(0);
	}