Examine source code of NeelPhishChecker

{
  "manifest_version": 2,
  "name": "Python Chrome Plugin",
  "description": "This extension runs Python code.",
  "version": "1.0",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "https://ajax.googleapis.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2b1998c5-ca04-4691-97ef-ab31b200a969}"
    }
  }
}