chromium/chrome/test/data/extensions/permissions/unknown/manifest.json

{
   "content_scripts": [ {
      "js": [ "test.js" ],
      "matches": [ "http://*.google.com/*", "https://*.google.com/*", "http://*.google.com.hk/*", "http://www.example.com/*" ]
   } ],
   "name": "Unknown Permissions Test",
   "permissions": [ "tabs", "blah" ],
   "manifest_version": 2,
   "version": "1"
}