Examine source code of Allinks

{
  "manifest_version": 2,
  "name": "Allinks",
  "description": "All web page links in one place",
  "version": "0.1.21",
  "browser_action": {
    "default_icon": {
      "19": "icons/logo-19.png",
      "38": "icons/logo-38.png"
    },
    "default_title": "Allinks",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/logo-48.png",
    "96": "icons/logo-96.png"
  },
  "permissions": [
    "activeTab"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}