Examine source code of Chegg Skipper

{
  "manifest_version": 2,
  "name": "Chegg Skipper",
  "version": "0.1.0",
  "content_scripts": [
    {
      "matches": [
        "https://expert.chegg.com/*"
      ],
      "js": [
        "./script.js"
      ]
    }
  ],
  "icons": {
    "16": "./icons/icon16.png",
    "48": "./icons/icon48.png",
    "128": "./icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b83e876-5d24-46b3-9e7b-ab345882a238}"
    }
  }
}