Naver Cafe chatting alertor 2

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Naver Cafe chatting alertor 2",
  "description": "네이버 카페 채팅이 올라오면 알림 소리가 들립니다",
  "author": "izure1 <[email protected]>",
  "version": "2.0.5",
  "icons": {
    "48": "icons/btn_snd_on.png"
  },
  "permissions": [
    "<all_urls>",
    "*://*/*",
    "background",
    "unlimitedStorage",
    "storage",
    "notifications"
  ],
  "browser_action": {
    "default_title": "title",
    "default_popup": "pages/popup.html"
  },
  "background": {
    "persistent": false,
    "page": "pages/background.html"
  },
  "options_page": "pages/options.html",
  "content_scripts": [
    {
      "js": [
        "js/manifest.js",
        "js/vendor.js",
        "js/content.js"
      ],
      "run_at": "document_end",
      "matches": [
        "https://chat.cafe.naver.com/room/*",
        "https://talk.cafe.naver.com/channels/*"
      ],
      "all_frames": true
    }
  ],
  "manifest_version": 2,
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "web_accessible_resources": [
    "js/content.js",
    "media/snd_alert.mp3",
    "media/snd_keyboard.mp3",
    "media/snd_login.mp3",
    "image/btn_snd_off.png",
    "image/btn_snd_on.png",
    "image/unknown_profile.png"
  ]
}