b321d441_avaScript_APIs___Google_Chrome__Description
[Name] syncFileSystem [Since] 27 [Description] 
Use the chrome.syncFileSystem API to save and synchronize data on Google Drive. This API is NOT for accessing arbitrary user docs stored in Google Drive. It provides app-specific syncable storage for offline and caching usage so that the same data can be available across different clients. Read Manage Data for more on using this API.
JavaScript APIs - Google Chrome
Description