Examine source code of Radio Sk

{
  "manifest_version": 2,
  "name": "__MSG_extensiontitle__",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "version": "0.2.7.0",
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+8"
      },
      "description": "popup"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cade6c1f-b914-475e-9cb5-2cb18b8fbb47}",
      "strict_min_version": "89.0"
    }
  },
  "icons": {
    "32": "icons/icon-32.png",
    "64": "icons/icon-64.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_popup": "popup/index.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "permissions": [
    "*://icecast.stv.livebox.sk/*",
    "*://stream.funradio.sk:8000/*",
    "*://stream.bauermedia.sk/*",
    "*://stream3.bestfm.sk:8000/*",
    "*://stream.dobreradio.sk/*",
    "*://109.71.67.102:8000/*",
    "*://stream.bbfm.sk/*",
    "*://stream.21.sk/*",
    "*://online.radiokiks.sk:8000/*"
  ]
}