Examine source code of Password Generator

{
  "manifest_version": 2,
  "name": "Password Generator",
  "version": "1.0",
  "description": "Generate a random secure password.",
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{090259e7-0a8a-4934-89a2-327556ea3346}"
    }
  }
}