Examine source code of Awareness hunt

{
  "manifest_version": 2,
  "name": "Awareness hunt",
  "version": "1.0.15.52",
  "description": "Help people to not binge-watch YouTube. Restricts user to watch one video at a time, and not skip, and jump between multiple videos.",
  "icons": {
    "48": "icons/awareness-48.png",
    "96": "icons/awareness-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "awareness-hard.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "storage",
    "*://*.youtube.com/*"
  ],
  "browser_action": {
    "default_icon": "icons/awareness-48.png",
    "default_title": "YouTube hunt",
    "default_popup": "popup/popup.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f356227-b6c4-4673-906e-0578e7fab77f}"
    }
  }
}