Examine source code of CalyScope

{
  "manifest_version": 2,
  "name": "CalyScope",
  "description": "Ne ratez plus un live de CalyScope avec cette extension !!!",
  "version": "0.0.0.4resigned1",
  "background": {
    "scripts": [
      "event.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "assets/images/icon-32.png",
    "default_title": "CalyScope",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "assets/images/icon-16.png",
    "32": "assets/images/icon-32.png",
    "48": "assets/images/icon-48.png",
    "128": "assets/images/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "css": [],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "notifications",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e708f5ce-e62f-4aee-818a-272f8c71eea2}"
    }
  }
}