Examine source code of SendLinkToTelegram

{
  "manifest_version": 2,
  "name": "TELEGRAM",
  "version": "1.1resigned1",
  "description": "Send link",
  "icons": {
    "32": "telegram32.png",
    "48": "telegram48.png"
  },
  "permissions": [
    "download",
    "tabs",
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": "telegram32.png",
    "default_title": "Send link telegram"
  },
  "options_ui": {
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "sendtotelegram.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{18273cfd-59e0-4d0e-8ea8-b91673930279}"
    }
  }
}