Examine source code of gaInternalTraffic

{
  "manifest_version": 2,
  "name": "gaInternalTraffic",
  "description": "Adds the parameter gaInternalTraffic in query string to filter the internal traffic in the prod env of a predefined set of domains.",
  "version": "0.0.0.1",
  "browser_action": {
    "default_icon": "icon128.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*.nexi.it/*"
  ]
}