Examine source code of CS account finder

{
  "manifest_version": 2,
  "name": "CS account finder",
  "version": "1.0.20",
  "description": "Finds FaceIT and Esportal accounts for steam users",
  "icons": {
    "16": "icons/csgo-16.png",
    "32": "icons/csgo-32.png",
    "48": "icons/csgo-48.png",
    "64": "icons/csgo-64.png",
    "128": "icons/csgo-128.png",
    "256": "icons/csgo-256.png"
  },
  "background": {
    "scripts": [
      "background/context-menu.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "menus",
    "clipboardRead",
    "https://api.faceit.com/*",
    "https://api.esportal.com/*",
    "https://steamcommunity.com/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/csgo-16.png",
      "32": "icons/csgo-32.png",
      "48": "icons/csgo-48.png",
      "64": "icons/csgo-64.png",
      "128": "icons/csgo-128.png",
      "256": "icons/csgo-256.png"
    },
    "default_title": "CS account finder",
    "default_popup": "popup/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{41b4eca7-3308-41eb-b3c4-467bcf77f0cc}",
      "strict_min_version": "90.0"
    }
  }
}