Examine source code of WebAccessControlPlugin

{
  "browser_specific_settings": {
    "gecko": {
      "id": "hanpengzhou@won-cloud.com"
    }
  },
  "manifest_version": 2,
  "name": "WebAccessControlPlugin",
  "description": "用于限制网页访问",
  "version": "2.5",
  "permissions": [
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "contentScript.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}