Examine source code of X-Forwarded-For komal

{
  "manifest_version": 2,
  "name": "X-Forwarded-For Header IP",
  "description": "This extension allows you quickly to set your X-Forwarded-For HTTP Header IP Address. X-Forworded-For Header IP Address changer.",
  "author": "me0",
  "version": "0.1.0",
  "background": {
    "scripts": [
      "eventPage.js"
    ],
    "persistent": true
  },
  "icons": {
    "32": "assets/logo-1.png",
    "38": "assets/logo-1.png",
    "64": "assets/logo-1.png",
    "128": "assets/logo-1.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/logo-1.png",
      "32": "assets/logo-1.png",
      "38": "assets/logo-1.png"
    },
    "default_title": "Set X-Forwarded-For Header IP",
    "default_popup": "options.html",
    "browser_style": true
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "kemo@kemo.kemo"
    }
  }
}