Examine source code of Geospoof

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDescription__",
  "version": "0.1.8",
  "short_name": "__MSG_appShortName__",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fea9b9d8-d628-45d9-a4f8-c3ea720ba00f}",
      "strict_min_version": "71.0"
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "page_action": {
    "default_icon": {
      "48": "images/icon-48.png"
    }
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "scripts/content_script.js"
      ]
    }
  ],
  "minimum_chrome_version": "78.0",
  "devtools_page": "pages/devtools_page.html",
  "options_ui": {
    "page": "pages/options_page.html",
    "open_in_tab": true
  },
  "content_security_policy": "script-src 'self' 'sha256-GZIcz60Uwd6wT3vaYke/atSr53TehbYAPepOa3d03Vw=';object-src 'self'",
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ]
}