Examine source code of Renamenath

{
  "name": "Renamenath",
  "author": "Ajay Mohan Bisht",
  "description": "Reverses all renames done by Ajay Mohan Bisht",
  "version": "1.6.2resigned1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "browser-polyfill.js"
    ],
    "persistent": true
  },
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "applications": {
    "gecko": {
      "id": "ajay@mohan.bisht"
    }
  },
  "icons": {
    "64": "images/guard-64.png",
    "128": "images/guard-128.png",
    "256": "images/guard-256.png",
    "512": "images/guard-512.png"
  }
}