Examine source code of gest_mdp

{
  "manifest_version": 2,
  "name": "gest_mdp",
  "version": "1.0",
  "description": "Extension pour https://github.com/Th3o-D/gest_mdp",
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6439c70c-f58f-40db-9042-8d3dad1acb1c}"
    }
  }
}