Examine source code of G Shop

{
  "manifest_version": 2,
  "name": "G Shop",
  "version": "1.1",
  "description": "Search Google Shopping instantly with zero tracking.",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "https://www.google.com/*"
  ],
  "web_accessible_resources": [
    "pin-example.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gshop@yourdomain.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}