YT Looper: Repeat Youtube videos in loop

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "YT Looper: Repeat Youtube videos in loop",
  "short_name": "YT Looper",
  "description": "Loop, save, adjust length and playback speed of Youtube videos",
  "version": "0.7.3",
  "icons": {
    "16": "images/loop_icon16.png",
    "32": "images/loop_icon32.png",
    "48": "images/loop_icon48.png",
    "128": "images/loop_icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "images/loop_icon16.png",
      "32": "images/loop_icon32.png",
      "48": "images/loop_icon48.png",
      "128": "images/loop_icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "inject-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [],
  "web_accessible_resources": [
    "bundle.js"
  ],
  "content_security_policy": "script-src 'self' https://www.google-analytics.com https://www.googletagmanager.com; object-src 'self'"
}