Examine source code of Charity Kite

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Charity Kite",
  "short_name": "Charity Kite",
  "description": "This extension redirects www.amazon.com to smile.amazon.com",
  "version": "0.0.2resigned1",
  "icons": {
    "16": "ck-16.png",
    "48": "ck-48.png",
    "128": "ck-128.png"
  },
  "browser_action": {
    "default_icon": "charity_kite.png",
    "default_title": "Charity Kite redirects www.amazon.com to smile.amazon.com – so you never forget to earn free money for your favorite charity.",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "request.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "http://www.amazon.com/*",
    "https://www.amazon.com/*",
    "http://www.amazon.de/*",
    "https://www.amazon.de/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3376c089-0668-4eb5-9def-c07a41b30975}"
    }
  }
}