Examine source code of Video Speed Controller V2

{
  "manifest_version": 2,
  "name": "Video Speed Controller V2",
  "version": "1.2",
  "description": "Control the playback speed of HTML5 videos with keyboard shortcuts and floating controls.",
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/logo_32.png",
      "64": "icons/logo_64.png",
      "128": "icons/logo_128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js",
        "controller.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aaed0601-abc6-404e-96a3-bc28fe7f7060}"
    }
  }
}