Examine source code of Hungry Snake

{
  "manifest_version": 2,
  "name": "Hungry Snake for Chrome",
  "description": "OLD SCHOOL SNAKE",
  "version": "1.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "yromeqwkaqfsd@gmail.com"
    }
  },
  "icons": {
    "256": "icons8-s_cute.png"
  },
  "browser_action": {},
  "permissions": [
    "storage"
  ]
}