Examine source code of VirusTotal Scan

{
  "author": "vtscan@gmx.de",
  "background": {
    "page": "b.html"
  },
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://www.github.com/2000me/vtscan",
  "icons": {
    "16": "i.svg"
  },
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "contextMenus",
    "notifications",
    "storage",
    "https://www.virustotal.com/*"
  ],
  "version": "0.6.3"
}