Examine source code of Netflix Helper

{
  "name": "Netflix Helper",
  "version": "2.1.0",
  "manifest_version": 2,
  "description": "This Netflix extension to control volume with the mouse wheel, and auto skip intro.",
  "homepage_url": "https://chrome.google.com/webstore/detail/netflix-helper/mlfdbphlfojgfeepjojcalginhedfpnk",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon128.png",
    "default_title": "Netflix Helper UI",
    "default_popup": "src/popup/public/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.netflix.com/*"
      ],
      "js": [
        "src/backend/netflixHelper.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "http://*/",
    "https://*/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b02c9453-a06d-4dbf-a776-d8445b452f08}"
    }
  }
}