Examine source code of Auto Close Porn Tabs

{
  "manifest_version": 2,
  "name": "Auto Close Porn Tabs",
  "version": "0.1.1",
  "description": "Blocks known domains and auto-closes tabs with porn content.",
  "incognito": "spanning",
  "permissions": [
    "tabs",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "applications": {
    "gecko": {
      "id": "autoclose-porn@local"
    }
  }
}