Examine source code of Coinbase Currency wallet

{
  "manifest_version": 2,
  "name": "Coinbase Currency",
  "version": "3.2.1",
  "default_locale": "en",
  "description": "Converts prices from any currency (€, $, £, ¥, etc.) to prices in a selectable currency automatically while browsing.",
  "icons": {
    "16": "images/1402781551_currency_exchange_1.png",
    "48": "images/1415072079_currency_exchange_1-48.png",
    "128": "images/1415072098_currency_exchange_1-128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "images/1415072771_currency_exchange_1-19.png",
      "38": "images/1415072079_currency_exchange_1-38.png"
    },
    "default_title": "__MSG_buttontitle__",
    "default_popup": "panel.html"
  },
  "author": "Per Johansson",
  "background": {
    "scripts": [
      "common/currencylayer-quotes.js",
      "common/dcc-main.js",
      "common/ecb-quotes.js",
      "common/eventAggregator.js",
      "common/freegeoip-service.js",
      "common/functions.js",
      "common/informationHolder.js",
      "common/nekudo-service.js",
      "common/quotes-service.js",
      "common/parseSettings.js",
      "common/settings.js",
      "gc-chromeInterface.js",
      "gc-contentInterface.js",
      "gc-l10n.js",
      "gc-main.js",
      "gc-storage-service.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "settings.html",
    "chrome_style": false
  },
  "permissions": [
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "short_name": "Coinbase Converter",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9718529d-634a-4bf3-9c6d-e8463e8fe9c5}"
    }
  }
}