Examine source code of Auto Iframes Remover

{
  "version": "0.3.9",
  "manifest_version": 2,
  "short_name": "AiR",
  "homepage_url": "https://wildwestwiki.com/wiki/1090025/auto-iframes-remover-air-chrome-extension",
  "name": "Auto Iframes Remover",
  "description": "This extension will automatically remove all iframes on all websites.",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "onload.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "options.html"
  },
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "icons": {
    "48": "airsmall.png",
    "128": "air.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "childsplayextensions@gmail.com"
    }
  }
}