Examine source code of PrivacyShield

{
  "manifest_version": 2,
  "name": "PrivacyShield",
  "version": "1.0",
  "description": "PrivacyShield empowers you to control online privacy by detecting and managing trackers and cookies with a sci-fi shield matrix interface.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_popup": "dashboard.html",
    "default_icon": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "tracker.js"
      ]
    }
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc4e3e96-c832-4b2e-8937-d4e910794f2c}"
    }
  }
}