Examine source code of Music Bookmark Tool

{
  "manifest_version": 2,
  "name": "Music Bookmark Organizer",
  "description": "Organize your music bookmarks with ease!",
  "version": "1.2",
  "permissions": [
    "storage",
    "bookmarks",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fcfc5219-331c-413a-b4bd-b014c89957ae}"
    }
  }
}