Examine source code of MDN Search

{
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "version": "0.0.1",
  "author": "Guokai Han",
  "manifest_version": 2,
  "omnibox": {
    "keyword": "mdn"
  },
  "permissions": [
    "alarms",
    "https://developer.mozilla.org/"
  ],
  "icons": {
    "192": "icon/mdn_logo-192.png"
  },
  "background": {
    "scripts": [
      "fuse.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e9502060-4321-490c-8678-3652fa5a8dee}"
    }
  }
}