Examine source code of Random Article

{
  "manifest_version": 2,
  "name": "Random Article",
  "version": "1.0",
  "description": "Mở bài viết ngẫu nhiên từ Wikipedia.",
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Open Random Wikipedia Article"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d04c6916-de8e-48f7-b0f1-0e05b7f799c6}"
    }
  }
}