Examine source code of Track Amazon product

{
  "manifest_version": 2,
  "name": "CamelCamelCamel Tracker",
  "version": "1.0",
  "description": "Track Amazon product prices on CamelCamelCamel.",
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{08d8d102-1785-45c8-b7e0-abb3c1087140}"
    }
  }
}