Examine source code of Trace 4.0.0

{
  "name": "Trace 4.0",
  "version": "1.1.4",
  "manifest_version": 2,
  "permissions": [
    "https://traceapi.uha4point0.fr/",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./JS/activityWatcher.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "./HTML/index.html",
    "default_icon": "img/icon-off.png"
  },
  "background": {
    "scripts": [
      "./JS/background.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d2a7a45b-d91b-446a-9098-ad054714e1b2}"
    }
  }
}