Examine source code of Breakout brick

{
  "description": "Breakout brick game",
  "manifest_version": 2,
  "name": "Breakout brick",
  "version": "2resigned1",
  "icons": {
    "32": "icon/brick.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon/brick.png",
    "default_title": "Mini Game",
    "default_popup": "index.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{cacc76e5-abf4-4b79-893b-62a84508efe3}"
    }
  }
}