src/vs/workbench/contrib/notebook/browser/viewParts/notebookEditorToolbar.ts/NotebookEditorToolbar/layout
class NotebookEditorToolbar:	layout(dimension: DOM.Dimension) {
		this._dimension = dimension;

		if (!this._useGlobalToolbar) {
			this.domNode.style.display = 'none';
		} else {
			this.domNode.style.display = 'flex';
		}
		this._computeSizes();
	}