Examine source code of Plex Lyrics Auto Clicker

{
  "manifest_version": 2,
  "name": "Plex Lyrics Auto Clicker",
  "version": "1.2",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.plex.tv/*",
        "*://*/web/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f92fce1-8250-4a3e-bcf5-34b9318c2616}"
    }
  }
}