Examine source code of ABCProxy-Extension

{
  "manifest_version": 2,
  "name": "ABCProxy-Extension",
  "version": "1.0.0",
  "description": "Install the ABCProxy Extension today to manage your proxies and access preferred websites with a simple one-click connection.",
  "icons": {
    "16": "./img/16.png",
    "48": "./img/48.png",
    "128": "./img/128.png"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "16": "./img/16.png",
      "48": "./img/48.png",
      "128": "./img/128.png"
    },
    "default_title": "__MSG_manifest_icon_default_title__",
    "default_popup": "popup.html"
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "storage",
    "proxy",
    "http://*/*",
    "https://*/*",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{477b47a9-3c96-4d7a-8572-3da4fd2e22bd}"
    }
  }
}