Examine source code of Time-Zone Converter

{
  "manifest_version": 2,
  "name": "Time-Zone Converter",
  "version": "1.0",
  "description": "Converts time across different time zones.",
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Convert Time"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{407580b6-ead1-4530-82ae-55d957d11db3}"
    }
  }
}