Examine source code of Translate

{
  "manifest_version": 2,
  "name": "Translate",
  "version": "1.0",
  "permissions": [
    "contextMenus",
    "notifications"
  ],
  "description": "Adds a red border to all webpages matching mozilla.org.",
  "background": {
    "scripts": [
      "borderify.js"
    ]
  }
}