Examine source code of Video Resumer

{
  "name": "Video Resumer",
  "version": "1.2.4resigned1",
  "author": "Appteligent LTD.",
  "manifest_version": 2,
  "default_locale": "en",
  "description": "__MSG_description__",
  "icons": {
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "options_ui": {
    "page": "content/options.html"
  },
  "background": {
    "scripts": [
      "content/settings.js",
      "content/console.js",
      "content/chrome-storage.js",
      "content/tracker.js",
      "main.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content/settings.js",
        "content/console.js",
        "content/yt.js"
      ]
    },
    {
      "matches": [
        "*://*.youtube.com/embed/*",
        "*://*.youtube-nocookie.com/embed/*"
      ],
      "js": [
        "content/settings.js",
        "content/console.js",
        "content/yt.js"
      ],
      "all_frames": true
    }
  ],
  "permissions": [
    "storage",
    "unlimitedStorage",
    "alarms"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "videoresumer@jetpack"
    }
  }
}