Examine source code of Safe Ad-Free Access

{
  "manifest_version": 2,
  "name": "Safe Ad-Free Access",
  "version": "2.0",
  "description": "Manage ads, open new tabs, and provide URL warnings",
  "icons": {
    "16": "16.png",
    "48": "48.png",
    "128": "128.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Safe Ad-Free Access"
  },
  "web_accessible_resources": [
    "warning.html",
    "warning.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "safe-ad-free@example.com"
    }
  }
}