Examine source code of Lid3 Stream Extension

{
  "manifest_version": 2,
  "name": "Lid3 Stream Extension Twitch",
  "description": "Cette Extension vous permet de voir si je suis en stream mes Zins !",
  "version": "1.1resigned1",
  "icons": {
    "64": "img/logo_64.png"
  },
  "browser_action": {},
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "notifications"
  ],
  "web_accessible_resources": [
    "img/logo_64.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ea4f66b-eee3-4af0-90ab-f6290383f405}"
    }
  }
}