Examine source code of CodeChef Copy

{
  "manifest_version": 2,
  "name": "CodeChef Copy",
  "version": "0.1",
  "author": "Devanshu Raj",
  "description": "Copy sample testcases from CodeChef with a single click",
  "content_scripts": [
    {
      "matches": [
        "https://www.codechef.com/*/problems/*",
        "https://www.codechef.com/problems/*"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ]
}