Examine source code of Assets CDN

{
  "manifest_version": 2,
  "name": "Assets CDN",
  "version": "1.2.10",
  "description": "国内标准Firefox浏览器加速扩展",
  "icons": {
    "48": "icons/gitlab.svg"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": "icons/gitlab.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "libs/jquery.min.js",
      "background/background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "permissions": [
    "dns",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "{633446bf-455c-422d-9167-47745b7a8e67}"
    }
  },
  "homepage_url": "https://github.com/saowang/assets-cdn"
}