Keep scroll sync

based extension data sync 数据同步是基于 platforms. an (https://developer.chrome.com/extensions/storage) synced chrome.storage chrome.storage position scroll 实现的。 on page across keeping (https://developer.chrome.com/extensions/storage) roadmap: it's for p-scroll-sync/issues/1 这是一个用于在不同设备之间同步页面滚动位置的浏览器扩展程序。 is https://github.com/deguang/kee