Examine source code of Whatsapp Privacy Plugin

{
  "manifest_version": 2,
  "name": "Whatsapp Privacy Plugin",
  "description": "A minimal extension for making sure your WhatsApp is hidden in public PCs.",
  "version": "0.0.1",
  "icons": {
    "16": "logo/logo-16.png",
    "48": "logo/logo-48.png",
    "128": "logo/logo-128.png"
  },
  "options_page": "settings/settings.html",
  "browser_action": {
    "default_title": "Whatsapp Privacy Plugin",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "content_scripts": [
    {
      "js": [
        "foreground.js"
      ],
      "css": [
        "foreground.css"
      ],
      "matches": [
        "https://web.whatsapp.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "whatsapp-privacy@hamzaihsan.com"
    }
  }
}