Watchmarker for Youtube

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Watchmarker for Youtube",
  "description": "Automatically mark videos on Youtube that you have already watched.",
  "homepage_url": "https://sniklaus.com/",
  "version": "4.6.1",
  "permissions": [
    "alarms",
    "downloads",
    "history",
    "tabs",
    "cookies",
    "webRequest",
    "webRequestBlocking",
    "https://www.youtube.com/*"
  ],
  "options_ui": {
    "page": "content/index.html",
    "open_in_tab": true
  },
  "icons": {
    "72": "content/icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "css": [],
      "js": [
        "youtube.js"
      ]
    }
  ],
  "browser_action": {
    "browser_style": false,
    "default_title": "Watchmarker for Youtube",
    "default_icon": {
      "72": "content/icon.png"
    }
  }
}