Examine source code of Shmoogle

{
  "manifest_version": 2,
  "name": "Shmoogle",
  "version": "1.1",
  "web_accessible_resources": [
    "web_button.png"
  ],
  "description": "Mixing search results randomly in a new Shmoogle tab. No ads, No manipulating algorithms, Equal opportunities!",
  "icons": {
    "48": "addon_icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://google.com/search?*",
        "*://www.google.com/search?*",
        "*://bing.com/search?*",
        "*://www.bing.com/search?*"
      ],
      "js": [
        "shmoogle_it.js"
      ]
    }
  ],
  "background": {
    "content_scripts": [
      "shmoogle_it.js"
    ],
    "scripts": [
      "shmoogle_it.js"
    ]
  },
  "permissions": [
    "notifications",
    "activeTab"
  ]
}