Examine source code of Optimizely Inspector

{
  "name": "Optimizely Inspector",
  "description": "See all active Experiments on the site as well as the current page. Turn Optimizely Off, Delete Cookies and Change Variations.",
  "version": "3.1.0",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "webNavigation",
    "webRequest",
    "cookies",
    "storage",
    "http://*/*",
    "https://*/*",
    "webRequestBlocking"
  ],
  "devtools_page": "devtools.html",
  "icons": {
    "16": "/images/16.png",
    "32": "/images/32.png",
    "48": "/images/48.png",
    "128": "/images/128.png"
  },
  "web_accessible_resources": [
    "/images/16.png",
    "/images/32.png",
    "/images/48.png",
    "/images/128.png",
    "background.js",
    "devtools.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a35258a3-ccea-490c-89fb-66b2ee03e0d7}"
    }
  }
}