Examine source code of Anon browser

{
  "description": "Randomize browser properties",
  "manifest_version": 2,
  "name": "Anon browser",
  "version": "0.61",
  "icons": {
    "48": "icons/icon-48.jpg"
  },
  "permissions": [
    "http://*/*",
    "https://*/*",
    "webRequest",
    "webRequestBlocking",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.jpg",
      "32": "icons/icon-32.jpg"
    },
    "browser_style": true,
    "default_popup": "popup/settings.html"
  },
  "applications": {
    "gecko": {
      "id": "@ayoul3"
    }
  }
}