Examine source code of FXOpen Traders Tools

{
  "name": "FXOpen Traders Tools",
  "version": "1.2.0",
  "description": "FXOpen is bringing you the most useful tools for required for successful trading.",
  "permissions": [
    "declarativeContent",
    "storage",
    "unlimitedStorage"
  ],
  "content_security_policy": "script-src 'self' https://calendar.fxstreet.com https://fxopen.com https://cors-anywhere.herokuapp.com; object-src 'self'",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "images/logo16.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "manifest_version": 2
}