src/vs/workbench/browser/layout.ts/Layout/setStatusBarHidden
class Layout:	private setStatusBarHidden(hidden: boolean, skipLayout?: boolean): void {
		this.stateModel.setRuntimeValue(LayoutStateKeys.STATUSBAR_HIDDEN, hidden);

		// Adjust CSS
		if (hidden) {
			this.container.classList.add(LayoutClasses.STATUSBAR_HIDDEN);
		} else {
			this.container.classList.remove(LayoutClasses.STATUSBAR_HIDDEN);
		}

		// Propagate to grid
		this.workbenchGrid.setViewVisible(this.statusBarPartView, !hidden);
	}