Examine source code of directUC

{
  "version": "1.3.1",
  "name": "directUC",
  "manifest_version": 2,
  "author": "Pedro Pablo Aste Kompen <wachunei@gmail.com>",
  "icons": {
    "16": "icon_16.d3b71bb7.png",
    "32": "icon_32.e9afa225.png",
    "48": "icon_48.3a66afcb.png",
    "128": "icon_128.31fd388e.png",
    "256": "icon_256.e5b16465.png"
  },
  "description": "Accede rápidamente a diferentes servicios de la UC.",
  "permissions": [
    "http://*.uc.cl/*",
    "https://*.uc.cl/*",
    "http://*.puc.cl/*",
    "https://*.puc.cl/*",
    "notifications",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon_256.e5b16465.png",
    "default_title": "Abrir directUC",
    "default_popup": "popup.3b1ba4b2.html"
  },
  "omnibox": {
    "keyword": "uc"
  },
  "background": {
    "scripts": [
      "background.3bf476a3.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.d34e08a5.html",
    "open_in_tab": true
  },
  "content_scripts": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "jid1-ElOxc75QCOQZOg@jetpack"
    }
  }
}