Examine source code of Oz Stock

{
  "manifest_version": 2,
  "name": "Oz Stock",
  "description": "Check Officeworks product stock levels directly on OzBargain!",
  "version": "3.0.0",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "*://*.ozbargain.com.au/*",
    "*://nrby.in/*",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ozbargain.com.au/*"
      ],
      "css": [
        "inject.css"
      ],
      "js": [
        "inject.js"
      ]
    }
  ]
}