src/vs/workbench/browser/layout.ts/Layout/updateWindowMaximizedState
class Layout:	updateWindowMaximizedState(maximized: boolean) {
		this.container.classList.toggle(LayoutClasses.MAXIMIZED, maximized);

		if (this.state.runtime.maximized === maximized) {
			return;
		}

		this.state.runtime.maximized = maximized;

		this.updateWindowBorder();
		this._onDidChangeWindowMaximized.fire(maximized);
	}