Examine source code of acfun-html5player

{
  "manifest_version": 2,
  "name": "AcFun HTML5 Player",
  "version": "3.7resigned1",
  "author": "scottxu",
  "description": "为Acfun替换一个和官方Flash播放器界面高度相仿的HTML5播放器。",
  "icons": {
    "48": "icons/acfun-48.png",
    "96": "icons/acfun-96.png",
    "128": "icons/acfun-128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "http://*.acfun.cn/*",
    "http://*.aixifan.com/*",
    "http://*.hapame.com/*",
    "https://static.yximgs.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://www.acfun.cn/v/*",
        "http://www.acfun.cn/bangumi/*",
        "http://www.aixifan.com/v/*",
        "http://www.aixifan.com/bangumi/*",
        "http://v.hapame.com/video/*"
      ],
      "js": [
        "content_scripts/jquery-3.3.1.min.js",
        "content_scripts/init.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background_scripts/webRequest.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "xyc0714@aliyun.com"
    }
  }
}