Examine source code of LinkedIn Container v2

{
  "manifest_version": 2,
  "name": "LinkedIn Container",
  "version": "1.0.1",
  "incognito": "not_allowed",
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "/img/icon.svg",
    "96": "/img/icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contain-linkedin@lanechr.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "developer": {
    "name": "Lane Christiansen",
    "url": "https://github.com/lanec/contain-linked-in-v2"
  },
  "homepage_url": "https://github.com/lanec/contain-linkedin",
  "browser_action": {
    "browser_style": true,
    "default_icon": "/img/lic-icon-dark.svg",
    "default_title": "LinkedIn Container",
    "default_popup": "panel.html",
    "theme_icons": [
      {
        "light": "/img/lic-icon.svg",
        "dark": "/img/lic-icon-dark.svg",
        "size": 16
      },
      {
        "light": "/img/lic-icon.svg",
        "dark": "/img/lic-icon-dark.svg",
        "size": 32
      }
    ]
  },
  "permissions": [
    "<all_urls>",
    "browsingData",
    "contextualIdentities",
    "cookies",
    "management",
    "storage",
    "tabs",
    "webRequestBlocking",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "psl.min.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "css": [
        "content_script.css"
      ]
    }
  ]
}