Examine source code of Bing Redirect Blocker

{
  "manifest_version": 2,
  "name": "阻止bing重定向",
  "version": "1.0.3",
  "description": "阻止bing.com重定向到cn.bing.com，配合科学上网使用",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "48.0",
      "id": "{2041c6cd-0223-40c2-acf6-4993abb8b549}"
    }
  }
}