src/vs/workbench/electron-sandbox/parts/titlebar/titlebarPart.ts/TitlebarPart/onUpdateAppIconDragBehavior
class TitlebarPart:	private onUpdateAppIconDragBehavior(): void {
		const setting = this.configurationService.getValue('window.doubleClickIconToClose');
		if (setting && this.appIcon) {
			(this.appIcon.style as any)['-webkit-app-region'] = 'no-drag';
		} else if (this.appIcon) {
			(this.appIcon.style as any)['-webkit-app-region'] = 'drag';
		}
	}