Examine source code of old.Reddit

{
  "name": "old.Reddit",
  "description": "The old Reddit design with less tracking.",
  "version": "2.1",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko_android": {},
    "gecko": {
      "id": "{2d3cc899-c10c-4b25-afdb-4d30f7a8382d}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://old.reddit.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "256": "oldreddit.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://reddit.com/*",
    "*://www.reddit.com/*",
    "*://np.reddit.com/*",
    "*://new.reddit.com/*",
    "*://pay.reddit.com/*"
  ]
}