Examine source code of Place Clusterfuck

{
  "description": "Remplaces toutes les images de place",
  "manifest_version": 2,
  "name": "Place Clusterfuck",
  "version": "3.7resigned1",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "https://www.ent-place.fr/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "64": "place.png"
    },
    "default_title": "Activé",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0864ada7-9b84-4e11-ac1e-41e9c988f6c9}"
    }
  }
}