Examine source code of Pas le Time

{
  "homepage_url": "https://rbwork.fr",
  "manifest_version": 2,
  "name": "Pas le Time",
  "version": "2.1",
  "description": "Simple and lightweight Video Speed Controler",
  "browser_specific_settings": {
    "gecko": {
      "id": "pas.le.time@rbwork.fr"
    }
  },
  "icons": {
    "48": "icons/default48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "Spcontrol.css"
      ],
      "js": [
        "Spcontrol.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "pas.le.time@rbwork.fr"
    }
  }
}