Examine source code of Embedded Redirect

{
  "manifest_version": 2,
  "name": "Embedded Redirect",
  "version": "0.1",
  "description": "A redirect browser extension to escape the never-ending recommendation hell on YouTube.",
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "embeded-redirect@datagonerogue"
    }
  }
}