Examine source code of Video Recordacder

{
  "version": "0.1.4",
  "manifest_version": 2,
  "offline_enabled": true,
  "name": "Video Recorder",
  "permissions": [
    "storage"
  ],
  "short_name": "video-recorder",
  "background": {
    "scripts": [
      "lib/background.js"
    ]
  },
  "homepage_url": "https://mybrowseraddon.com/video-recorder.html",
  "description": "Easily record video & audio from your computer's camera!",
  "browser_action": {
    "default_title": "Video Recorder",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{484f468a-9d7a-481e-9648-192869d72654}"
    }
  }
}