Examine source code of CS Accounts Extension

{
  "manifest_version": 2,
  "name": "CS Accounts Extension",
  "description": "csaccounts.com extension to view CS accounts in steam profile page",
  "version": "1.1.1",
  "icons": {
    "48": "icon-32x32.png",
    "96": "icon-32x32.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.steamcommunity.com/id/*",
        "*://*.steamcommunity.com/profiles/*"
      ],
      "exclude_matches": [
        "*://*.steamcommunity.com/id/*/allcomments*",
        "*://*.steamcommunity.com/profiles/*/allcomments*"
      ],
      "css": [
        "style.css"
      ],
      "js": [
        "js/content_script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "https://csaccounts.com/api/*",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b6ed8687-a993-4ec8-8a7d-44268f27bc99}"
    }
  }
}