Examine source code of My AutoFullscreen

{
  "description": "Auto Fullscreen for Firefox ",
  "manifest_version": 2,
  "name": "My AutoFullscreen",
  "version": "1.0.0.3resigned1",
  "background": {
    "scripts": [
      "2full.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c94b3756-7955-464a-b5fc-39b3bc0bb19f}"
    }
  }
}