Examine source code of Reddit Fixer

{
  "name": "Reddit Fixer",
  "version": "1.1resigned1",
  "description": "Redirects all reddit.com links to old.reddit.com",
  "manifest_version": 2,
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://reddit.com/*",
    "*://www.reddit.com/*"
  ],
  "background": {
    "scripts": [
      "redirector.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{595947b7-ac15-4947-ade7-20924ca4d1c8}"
    }
  }
}