Examine source code of Skip Steam Link Warnings

{
  "manifest_version": 2,
  "name": "Skip Steam Link Warnings",
  "description": "Skip warning page when clicking links in Steam.",
  "version": "1.0.1",
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://steamcommunity.com/linkfilter/?u=*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b59aef8-59d8-4b05-a038-5fc3420060e0}"
    }
  }
}