Examine source code of SixGame Deposit Tracker

{
  "manifest_version": 2,
  "name": "Six Game Deposit & Withdrawal Tracker",
  "version": "1.0",
  "description": "Track your deposits and withdrawals on Six Game.",
  "icons": {
    "48": "icons/icon.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "https://sixgame.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://sixgame.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{45d4a4ae-b5eb-4310-9bed-81131f3b8726}"
    }
  }
}