Examine source code of Comment Filter BY

{
  "name": "Comment Filter BY",
  "version": "1.6.4",
  "manifest_version": 2,
  "description": "Фильтр комментариев для сайтов байнета",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_title": "Comment Filter BY",
    "default_popup": "popup.html"
  },
  "default_locale": "ru",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "storage",
    "tabs",
    "https://*.onliner.by/*",
    "https://talks.by/*",
    "https://www.talks.by/*",
    "https://youtube.com/*",
    "https://www.youtube.com/*"
  ],
  "content_security_policy": "default-src 'self'; style-src 'unsafe-inline'",
  "content_scripts": [
    {
      "matches": [
        "https://*.onliner.by/*",
        "https://talks.by/*",
        "https://www.talks.by/*",
        "https://youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "js": [
        "js/content.js"
      ]
    }
  ]
}