Flush DNS & close sockets

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Flush DNS & close sockets",
  "short_name": "Flush DNS & close sockets",
  "description": "Flush DNS resolver cache and close all opened sockets. Requires Chrome to be started with the --enable-net-benchmarking flag.",
  "version": "1.3",
  "author": "Tonda Crha https://www.linkedin.com/in/antonin-crha-34522a13",
  "browser_action": {
    "default_icon": "resources/twocircles128.png",
    "default_popup": "dialog.html",
    "default_title": "Flush DNS resolver cache and close open sockets (Ctrl+Shift+F)"
  },
  "icons": {
    "16": "resources/twocircles16.png",
    "32": "resources/twocircles32.png",
    "48": "resources/twocircles48.png",
    "128": "resources/twocircles128.png"
  },
  "permissions": [],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Ctrl+Shift+F",
        "mac": "Command+Shift+F",
        "linux": "Ctrl+Shift+F",
        "chromeos": "Ctrl+Shift+F"
      }
    }
  },
  "minimum_chrome_version": "28",
  "offline_enabled": true
}