Examine source code of Feedback Helper

{
  "manifest_version": 2,
  "name": "Feedback Helper",
  "description": "Automatic feedback submit",
  "version": "0.0.0.1",
  "icons": {},
  "action": {},
  "content_scripts": [
    {
      "js": [
        "main.js"
      ],
      "matches": [
        "https://mis.nirmauni.ac.in/FEEDBACK/STUDENTFEEDBACKFORM.aspx"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bb3f2c5b-ee39-464b-bb5b-0756d4f54493}"
    }
  }
}