Examine source code of Smart YouTube Speed

{
  "manifest_version": 2,
  "name": "Smart YouTube Speed Controller",
  "version": "1.2.0",
  "description": "Automatically controls YouTube playback speeds - maintains normal speed for music content while allowing custom speeds for other videos.",
  "author": "Kyle Morgan",
  "homepage_url": "https://github.com/yourusername/smart-youtube-speed",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "*://*.youtube.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "browserAction/index.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5ff8d328-bc8a-42a7-90a0-7b14d288b2ce}"
    }
  }
}