Facebook hide video comments

manifest.json

{
  "manifest_version": 2,
  "name": "Facebook hide video comments",
  "version": "1.0",
  "description": "Hides Facebook Video Comments",
  "content_scripts": [
    {
      "matches": [
        "*://www.facebook.com/*"
      ],
      "js": [
        "app.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{edb81cd0-189b-41d3-8f66-4e890a038ca8}"
    }
  }
}