Examine source code of USDOnliner

{
  "manifest_version": 2,
  "name": "USDOnliner",
  "description": "Цены в долларах в каталоге Onliner.by.",
  "version": "1.0.1resigned1",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "browser_action": {
    "default_icon": "icons/48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://catalog.onliner.by/*"
      ],
      "js": [
        "js/views.js",
        "js/content.js",
        "js/observer.js"
      ],
      "css": [
        "css/content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "tabs",
    "*://catalog.onliner.by/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{df5f73d6-31c0-4f1e-835e-ab8eb7a95961}"
    }
  }
}