Examine source code of Cisdem Web Blocker

{
  "manifest_version": 2,
  "name": "Cisdem Web Blocker",
  "version": "1.9.0",
  "description": "__MSG_ACExtensionDescription__",
  "default_locale": "en",
  "icons": {
    "16": "icon16x16.png",
    "32": "icon32x32.png"
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "nativeMessaging",
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon32x32.png",
    "default_title": "Cisdem Web Blocker",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "web_blocker@cisdem.com"
    }
  }
}