Examine source code of Linkedin Sombre

{
  "manifest_version": 2,
  "name": "Linkedin Sombre",
  "version": "1.0",
  "description": "Offre un mode sombre pour Linkedin, adapté à la lecture en zone peu éclairée.",
  "icons": {
    "500": "icons/logo_linkedin_sombre.png"
  },
  "browser_action": {
    "default_icon": "icons/logo_linkedin_sombre.png"
  },
  "background": {
    "scripts": [
      "./linkedin_sombre.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "linkedin_sombre.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ]
}