Examine source code of Time Zone Spoofer

{
  "manifest_version": 2,
  "name": "Time Zone Spoofer",
  "version": "1.1",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{be5072bf-dc1a-45cd-8c83-c34d69bd3035}",
      "strict_min_version": "58.0"
    }
  }
}