Examine source code of rocxontool

{
  "manifest_version": 2,
  "name": "rocxontool",
  "version": "2.0",
  "description": "[NSFW] See NSFW-Content on 9-Gag without beeing logged in. Click on the 'Sensitive-Content' box and see the magic happen!",
  "icons": {
    "48": "icons/rocxontool-48.png"
  },
  "background": {
    "scripts": [
      "rocxon.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.9gag.com/gag/*"
      ],
      "js": [
        "rocxon.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/rocxontool-48.png",
    "default_title": "rocxontool",
    "default_popup": "menu/menu.html"
  }
}