Examine source code of Cloudway

{
  "manifest_version": 2,
  "name": "Cloudway",
  "description": "Cloudway",
  "version": "2.6",
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "permissions": [
    "proxy",
    "alarms",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "icons": {
    "16": "img/on.png",
    "48": "img/on.png",
    "128": "img/on.png"
  },
  "browser_action": {
    "default_icon": "img/off.png",
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "utils.js",
      "extension-base.js",
      "proxy-chrome.js",
      "proxy-firefox.js",
      "proxy-factory.js",
      "background.js"
    ]
  }
}