Examine source code of forward slash search

{
  "name": "forward slash search",
  "version": "2019.0.0",
  "icons": {
    "128": "/img/icons/icon_128.png"
  },
  "description": "Press / (slash) to focus first search or input field on a page to perform a search.",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "/js/content_script.js"
      ]
    }
  ],
  "manifest_version": 2
}