Examine source code of Open in Sourcegraph

{
  "manifest_version": 2,
  "name": "Open in Sourcegraph",
  "description": "This extension open the current github project on Sourcegraph",
  "version": "1.2resigned1",
  "permissions": [
    "activeTab",
    "tabs",
    "http://github.com/",
    "https://github.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "sourcegraph.png",
    "default_title": "Open in Sourcegraph"
  },
  "content_security_policy": "script-src 'self' 'sha256-84aafbe07ce1f71249ebf89af2487650f0a98234625b35667796d6f62a39d803'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{8b5b34e1-4cbe-4f80-acb4-7c431d2b70a2}"
    }
  }
}