src/vs/platform/userDataSync/common/keybindingsSync.ts/getKeybindingsContentFromSyncContent
export function getKeybindingsContentFromSyncContent(syncContent: string, platformSpecific: boolean, logService: ILogService): string | null {
	try {
		const parsed = <ISyncContent>JSON.parse(syncContent);
		if (!platformSpecific) {
			return isUndefined(parsed.all) ? null : parsed.all;
		}
		switch (OS) {
			case OperatingSystem.Macintosh:
				return isUndefined(parsed.mac) ? null : parsed.mac;
			case OperatingSystem.Linux:
				return isUndefined(parsed.linux) ? null : parsed.linux;
			case OperatingSystem.Windows:
				return isUndefined(parsed.windows) ? null : parsed.windows;
		}
	} catch (e) {
		logService.error(e);
		return null;
	}
}