Examine source code of Share to Telegram

{
  "manifest_version": 2,
  "name": "Share to Telegram",
  "version": "1.3resigned1",
  "description": "Shares link with Telegram user of your choice via Telegram app.",
  "author": "Albicant",
  "homepage_url": "https://github.com/albicant",
  "icons": {
    "48": "icons/Apps-Telegram-48.png",
    "96": "icons/Apps-Telegram-96.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "32": "icons/Telegram-32.png",
      "64": "icons/Telegram-64.png"
    },
    "default_title": "Share to Telegram"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{caf5ed28-17c3-446b-a748-7f4ef2bb4de6}"
    }
  }
}