Examine source code of Telegram Pusher

{
  "manifest_version": 2,
  "name": "Telegram Pusherr",
  "version": "2.56",
  "options_page": "options.html",
  "description": "Push URLs, images and notes to Telegram",
  "permissions": [
    "storage",
    "contextMenus",
    "tabs",
    "notifications",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "injector.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "injector.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_icon": "assets/t16.png",
    "default_title": "Telegram Pusher"
  },
  "icons": {
    "16": "assets/t16.png",
    "32": "assets/t32.png",
    "48": "assets/t48.png",
    "128": "assets/t128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bbba490-36e0-4ae0-978c-5541109df965}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}