Examine source code of AltLauncher Extension

{
  "name": "AltLauncher Extension",
  "description": "Need an account? Just click the generate button and get a old account quickly!",
  "version": "1.4.2",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://*.roblox.com/login",
        "https://*.roblox.com/login?*",
        "https://*.roblox.com/Login?*",
        "https://*.roblox.com/NewLogin",
        "https://*.roblox.com/newlogin",
        "https://*.roblox.com/newlogin?*",
        "https://*.roblox.com/NewLogin?*",
        "https://*.roblox.com/NewLogin"
      ],
      "js": [
        "libraries/jquery.js",
        "content.js"
      ]
    }
  ],
  "icons": {
    "128": "icon.ico"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e4a7ac0-6cd0-4476-a80b-9bc1302f499f}"
    }
  }
}