Hide YouTube watched videos

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Hide YouTube watched videos",
  "version": "1.0.1",
  "description": "Hide watched videos from your YouTube feed",
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/feed/subscriptions"
      ],
      "js": [
        "youtubeVideosFinder.js",
        "videosDisplayManager.js",
        "index.js"
      ]
    }
  ]
}