Examine source code of Astian Privacy Protect

{
  "version": "1.0.0.2",
  "manifest_version": 2,
  "name": "__MSG_name__",
  "short_name": "__MSG_short_name__",
  "author": "Astian, Inc",
  "default_locale": "en",
  "description": "__MSG_description__",
  "icons": {
    "16": "assets/icons/green-16.png",
    "128": "assets/icons/green-128.png"
  },
  "omnibox": {
    "keyword": "q"
  },
  "browser_action": {
    "default_icon": {
      "19": "assets/icons/green-19.png",
      "38": "assets/icons/green-38.png"
    },
    "default_title": "__MSG_name__",
    "default_popup": "pages/popup.html"
  },
  "background": {
    "page": "pages/background.html",
    "persistent": true
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "https://*.astiango.co/*"
      ],
      "css": [
        "assets/css/no-popin.css"
      ]
    }
  ],
  "minimum_chrome_version": "79.0",
  "web_accessible_resources": [
    "/web-accessible-resources/*"
  ],
  "applications": {
    "gecko": {
      "id": "contact@astian.org",
      "strict_min_version": "78.0"
    }
  },
  "options_ui": {
    "page": "pages/options.html",
    "open_in_tab": true
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "AstianGO",
      "keyword": "https://astiango.co",
      "search_url": "https://astiango.co/search?engine=1&q={searchTerms}&client=ext-chrome-sb",
      "favicon_url": "https://astiango.co/favicon.ico",
      "suggest_url": "https://api.qwant.com/api/suggest/?q={searchTerms}&client=opensearch",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "permissions": [
    "storage"
  ],
  "optional_permissions": [
    "<all_urls>",
    "webRequest",
    "webRequestBlocking",
    "webNavigation"
  ],
  "content_security_policy": "script-src 'self' 'sha256-Bm6SGASuSJ/y5W6tMmcnxeShdKrQ2QtIV2mH1Oh8qho='; object-src 'self'"
}