Examine source code of User Agent Parser

{
  "manifest_version": 2,
  "name": "User Agent Parser",
  "description": "Minimal UA parser",
  "version": "0.0.2",
  "browser_action": {
    "default_icon": "assets/images/logo/logo_48.png",
    "default_title": "User Agent Parser"
  },
  "icons": {
    "16": "assets/images/logo/logo_16.png",
    "48": "assets/images/logo/logo_48.png",
    "128": "assets/images/logo/logo_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "web_accessible_resources": [
    "assets/images/logo/logo_128.png"
  ],
  "applications": {
    "gecko": {
      "id": "gokulkathirvel@live.com"
    }
  }
}