Examine source code of AWM Proxy Tools

{
  "manifest_version": 2,
  "name": "AWM Proxy Tools",
  "version": "1.11",
  "description": "Manage lists of proxy servers.",
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "AWM Proxy Tool",
    "default_popup": "html/awmproxy.html"
  },
  "permissions": [
    "proxy",
    "storage",
    "unlimitedStorage"
  ]
}