Examine source code of Google Translate Page

{
  "manifest_version": 2,
  "name": "Google Translate Page",
  "version": "1.0",
  "description": "Translates the current page to Japanese using Google Translate",
  "permissions": [
    "activeTab",
    "https://translate.google.com/"
  ],
  "browser_action": {
    "default_title": "Translate to Japanese"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ad9da3fb-9666-4384-8354-023cfdfd9b16}"
    }
  }
}