Examine source code of Google Search Containers

{
  "manifest_version": 2,
  "name": "Google Search Containers",
  "version": "0.1",
  "description": "Easily accessible google search contexts",
  "icons": {
    "48": "assets/img/gsc-icon48.png",
    "96": "assets/img/gsc-icon96.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "https://www.google.com/search*"
  ],
  "options_ui": {
    "page": "/options/options.html"
  },
  "background": {
    "scripts": [
      "gsc.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@gsc.com"
    }
  }
}