chrome/test/data/extensions/api_test/fileapi/manifest.json

{
  "name": "chrome.fileapi",
  "version": "0.1",
  "manifest_version": 2,
  "description": "sanity test that fileapi is always enabled for extensions",
  "background": {
    "scripts": ["background.js"]
  },
  "permissions": ["tabs", "unlimitedStorage"]
}