Examine source code of CF Video Editorial Finder

{
  "name": "CF Video Editorial Finder",
  "version": "1.0.6",
  "description": "Adds video editorial and hints links (created by @aryanc403) into Contest materials sidebar on Codeforces contest and problem pages.",
  "icons": {
    "16": "assests/icon16.png",
    "32": "assests/icon32.png",
    "48": "assests/icon48.png",
    "128": "assests/icon128.png"
  },
  "manifest_version": 2,
  "permissions": [
    "alarms",
    "storage",
    "*://*.codeforces.com/*",
    "*://leetcode.com/*",
    "*://atcoder.jp/*",
    "*://www.codechef.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://codeforces.com/contest/*",
        "*://codeforces.com/problemset/problem/*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3636bb59-3f71-42ea-baef-6d688a2a0fe9}",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}