Examine source code of Hilo Signature Plugin

{
  "manifest_version": 2,
  "name": "Hilo Signature Plugin",
  "version": "1.0",
  "description": "Ký số",
  "permissions": [
    "nativeMessaging",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "js": [
        "js/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "js/hilo_api_signature.js"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/Hilo_Logo.png",
      "48": "images/Hilo_Logo.png",
      "128": "images/Hilo_Logo.png"
    }
  },
  "icons": {
    "16": "images/Hilo_Logo.png",
    "48": "images/Hilo_Logo.png",
    "128": "images/Hilo_Logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hilo-signature@hilo.com.vn",
      "strict_min_version": "109.0"
    }
  }
}