Examine source code of ProxyShield

{
  "manifest_version": 2,
  "name": "ProxyShield",
  "version": "1.0.0",
  "description": "Proxy manager - Configure and manage proxy settings directly from your browser",
  "permissions": [
    "proxy",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "alarms",
    "notifications",
    "privacy",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_popup": "popup.html",
    "default_title": "ProxyShield"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "proxyshield@simed.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ]
      }
    }
  }
}