Examine source code of Redirect

{
  "manifest_version": 2,
  "name": "Redirect",
  "version": "1.1.1",
  "description": "Redirects reddit.com to old.reddit.com",
  "icons": {
    "16": "icons/redirect-logo-16.png",
    "48": "icons/redirect-logo-48.png",
    "96": "icons/redirect-logo-96.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://www.reddit.com/*",
    "http://www.reddit.com/*"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{572d732e-a77b-45fb-afe2-56e2cea483a6}"
    }
  }
}