Password Lock for WhatsApp Web

manifest.json

{
  "name": "Password Lock for WhatsApp™ Web",
  "description": "Automatically lock WhatsApp Web after a period of time or by pressing the action button",
  "version": "0.1.3",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "alarms",
    "idle",
    "https://web.whatsapp.com/*"
  ],
  "background": {
    "scripts": [
      "/v2/chrome.action.js",
      "/v2/chrome.alarms.get.js",
      "/v2/chrome.runtime.js",
      "/v2/chrome.tabs.query.js",
      "worker.js"
    ]
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "homepage_url": "https://webextension.org/listing/password-lock-for-whatsapp.html",
  "content_scripts": [
    {
      "matches": [
        "https://web.whatsapp.com/*"
      ],
      "js": [
        "/data/blocker/run.js"
      ],
      "css": [
        "/data/blocker/run.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "/data/lock/index.html"
  ],
  "commands": {
    "_execute_browser_action": {}
  },
  "browser_action": {
    "default_title": "Open WhatsApp Web or focus an already opened one then lock it"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5790fe8a-aeff-41a2-b5c1-51fbf0c01685}"
    }
  }
}