Examine source code of I Reddit Redirect

{
  "name": "I Reddit Redirect",
  "description": "Redirects reddit.com usage to i.reddit.com",
  "version": "1.1.4",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://reddit.com/*",
    "*://www.reddit.com/*",
    "*://np.reddit.com/*",
    "*://new.reddit.com/*",
    "*://old.reddit.com/*",
    "*://en.reddit.com/*"
  ]
}