Examine source code of CleanInternet

{
  "manifest_version": 2,
  "name": "CleanInternet",
  "short_name": "CleanInternet",
  "description": "This extension restrains users from posting negative content online.",
  "version": "1.2resigned1",
  "icons": {
    "48": "icon-48.png",
    "96": "icon-96.png",
    "128": "icon-128.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "background.html",
    "default_title": "Click to report content"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "webNavigation",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.twitter.com/*"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "content_script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "banner.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d021f85a-d9a0-4c7f-af5d-5458b5db552f}"
    }
  }
}