Examine source code of jdairChangeIframe

{
  "manifest_version": 2,
  "name": "jdairChangeIframe",
  "version": "1.1",
  "description": "提供给海航航空集团内部员工使用的小网页插件",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "borderify.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "xxxxx@jdair.net"
    }
  }
}