Examine source code of Scrutator

{
  "manifest_version": 2,
  "name": "Scrutator",
  "version": "1.0",
  "description": "Trouvez l'adresse email pour ce site",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "tabs",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Trouvez l'adresse email pour ce site",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{58b5b797-a3a6-468a-9a58-569fe3e9c153}"
    }
  }
}