Examine source code of PrivacyWall Search Engine

{
  "name": "PrivacyWall Search Engine",
  "description": "The search engine that protects your privacy.",
  "icons": {
    "128": "128.png"
  },
  "version": "1.0.3",
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "PrivacyWall",
      "keyword": "privacywall",
      "search_url": "https://www.privacywall.org/search/secure/?q={searchTerms}&t=ffext",
      "favicon_url": "32.png",
      "suggest_url": "https://search.privacywall.org/suggest.php?q={searchTerms}",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "PrivacyWall",
    "default_icon": "32.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "search@privacywall.org"
    }
  },
  "manifest_version": 2
}