Examine source code of WAToolkit (Port)

{
  "name": "WAToolkit",
  "short_name": "WAToolkit",
  "version": "2.0",
  "manifest_version": 2,
  "minimum_chrome_version": "37",
  "description": "A set of useful and lightweight tools for WhatsApp™ Web client.",
  "icons": {
    "16": "img/favicon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.whatsapp.com/*"
      ],
      "js": [
        "script.js",
        "lib/drop/drop.js"
      ],
      "css": [
        "style.css",
        "lib/drop/css/drop-theme-basic.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "img/iconMenuItem24.png",
    "img/checkboxChecked.png",
    "img/checkboxUnchecked.png"
  ],
  "browser_action": {
    "default_icon": {
      "19": "img/favicon19.png",
      "38": "img/favicon38.png"
    },
    "default_title": "Open WhatsApp"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "*://*.whatsapp.com/*",
    "tabs",
    "background",
    "notifications",
    "webRequest",
    "webRequestBlocking"
  ]
}